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== German plan ==
{{Infobox nave
|nome=''Giovanni Acerbi''
|Categoria=cacciatorpediniere
|immagine=
|dimensioni_immagine=300px
|didascalia=
|bandiera=Flag of Italy (1861-1946) crowned.svg
|tipo=[[cacciatorpediniere]] (1917-1929)<br/>[[torpediniera]] (1929-1941)
|classe=[[Classe Giuseppe Sirtori (cacciatorpediniere)|''Sirtori'']]
|numero_unità=
|costruttori= [[Cantiere navale di Sestri Ponente|Odero]], [[Sestri Ponente]]
|cantiere=
|matricola='''AC'''
|ordinata=
|impostata=2 febbraio 1916
|varata=14 febbraio 1917
|completata=
|entrata_in_servizio=26 febbraio 1917
|proprietario={{Insegna navale|ITA (1861-1946)|icona}}
|radiata=
|destino_finale=affondata da aerei il 4 aprile 1941
|dislocamento=in carico normale 790 (o 845) [[tonnellata|t]]<br/>a pieno carico 850 (o 865) [[tonnellata|t]]
|stazza_lorda=
|lunghezza=tra le perpendicolari 72,5 [[metro (unità di misura)|m]]<br/>fuori tutto 73,5
|larghezza=7,30
|altezza=
|pescaggio=2,80-2,9
|profondità_operativa=
|ponte_di_volo=
|propulsione=4 caldaie Thornycroft<br />2 turbine a vapore [[Franco Tosi Meccanica|Tosi]]<br/>[[Potenza (fisica)|potenza]] 15.500-16.000 [[HP (unità di misura)|HP]]<br/>2 eliche
|velocità=30
|autonomia=2000/2100 miglia a 14 nodi
|capacità_di_carico=
|equipaggio=78 o 84-85 tra ufficiali, sottufficiali e marinai
|passeggeri=
|sensori=
|sistemi_difensivi=
|Artiglieria='''Alla costruzione:'''<nowiki></nowiki>
* 6 pezzi da 102/35 [[millimetro|mm]] Schneider-Armstrong 1914-15
* 2 pezzi da 40/39 [[millimetro|mm]] Vickers-Terni 1915
* 2 mitragliere da 6,5/80 [[millimetro|mm]]
'''Dal 1920:'''<nowiki></nowiki>
* 6 pezzi da 102/45 [[millimetro|mm]] Schneider-Armstrong 1917
* 2 pezzi da 40/39 [[millimetro|mm]] Vickers-Terni 1915
* 2 mitragliere da 6,5/80 [[millimetro|mm]]
|Siluri=<nowiki></nowiki>
* 4 tubi lanciasiluri da 450 [[millimetro|mm]]
|Altro_armamento=<nowiki></nowiki>
* attrezzatura per il trasporto e la posa di 10 [[mina navale|mine]] tipo Bollo
|corazzatura=
|veicoli_aerei=
|motto=
|soprannome=
|Ref=[http://www.warshipsww2.eu/shipsplus.php?language=E&id=62679 Warship 1900-1950], [http://www.navypedia.org/ships/italy/it_dd_sirtori.htm Navypedia] e [http://www.marina.difesa.it/storiacultura/storia/almanacco/Pagine/ABCD/acerbi.aspx Sito ufficiale della Marina Militare italiana]
}}
 
The first German combat units were sent to Italy to bolster its defences against a probabile Allied attack on Italian soil, while Germany and Italy were still allies. The decision to create German units in Italy was taken during the final phase of the [[Tunisian Campaign]]; on 9 May 1943, two days after the fall of [[Tunis]], the OKW informed the Italian Supreme Command (Comando Supremo) that three new German units would be formed, mostly employing second-line German units evacuated from [[Africa]]. These units would be the Sardinia Command (later [[90th Light Infantry Division (Wehrmacht)|90th Light Infantry Division]]), the Sicily Command (later [[15th Light Infantry Division (Wehrmacht)|15th Light Infantry Division]]), and a “ready reserve”. [[Adolf Hitler]] wrote to a dubious [[Benito Mussolini|Mussolini]] that since these were weak units that needed reinforcements, two additional German divisions would be sent from France. The [[Fallschirm-Panzer-Division 1 Hermann Göring]] arrived mid-May 1943 and was sent to Sicily, whereas the [[16th Infantry Division (Wehrmacht)|16th Panzer Division]] arrived in early June and was sent west of [[Bari]]. On 19 May also the headquarters of general [[Hans Hube]]’s 14th Panzerkorps was also sent from France, to strenghten the command structure of the ''Oberbefehlshaber Süd'' [[field marshal]] [[Albert Kesselring]].
Il '''[[Giovanni Acerbi]]''' è stato un [[cacciatorpediniere]] (e successivamente una [[torpediniera]]) della [[Regia Marina]].
 
On 20 May 1943, during a prolonged discussion at his headquarters, Hitler expressed his doubts about the politic stability of the Fascist government and the danger of a collapse of his Italian ally. A special report by SS-''Sonderführer'' Alexander von Neurath exposed the declining morale of the Italian population and the pro-British sentiment spreading through the high [[bourgeoisie]] and the military, and Hitler was convinced that the situation in the Mediterranean needed great attention, and that it was needed to prepare a detailed plan in view of a collapse of Italy or an overthrowing of Mussolini. More reports about a speech delivered by the Italian diplomat [[Giuseppe Bastianini]], information by [[Heinrich Himmler|Himmler]]’s men in Italy, and the presence in Sicily of General [[Mario Roatta]], considered a treacherous person, strenghtened the suspects of Hitler and his collaborators.
== Storia ==
 
On 21 May field marshal [[Wilhelm Keitel]], head of the OKW, issued the guidelines developed to face the possible defection of Italy from the Axis. The plan envisioned a series of operations in different theatres: Operation Alarich, the invasion of the Italian mainland; Operation Konstantin, the neutralization of the Italian forces in the [[Balkans]]; Operation Siegfried, occupation of the Italian-occupied areas in [[Southern France]]; Operation Nürnberg, to guard the Franco-Spanish frontier; Operation Kopenhagen, to control the passes on the French-Italian frontier.
=== La prima guerra mondiale ===
 
Meanwhile, German reserves kept being redeployed to face potential threats in the Mediterranean theare. Hitler, seriously worried about the Balkans, and in conflict with the Italian leadership and Mussolini himself due to the collaboration agreements between the Italian and [[Chetnik]] forces, decided to send the [[1st Panzer Division (Wehrmacht)|1st Panzer Division]] in the [[Peloponnese]] and even considered the possibility to send to Italy his three elite [[Waffen-SS]] armoured divisions, currently deployed on the [[Eastern Front]] for [[Operation Citadel]].
==== 1917 ====
 
On 17 June Mussolini, after a partial refusal, urgently asked for two German armoured divisions, as a reinforcement to confront the powerful Allied forces. After more arguments – caused by another change of mind by Mussolini, and by a proposal by General [[Vittorio Ambrosio]], the Chief of Staff of the Italian armed forces, to turn down German reinforcements and move to Italy the Italian troops deployed in France and the Balkans – the ever-deteriorating situation ([[Operation Corkscrew|Pantelleria had surrendered without resistance on 11 June]]) induced Hitler to send three more German divisions. These were the [[3rd Infantry Division (Wehrmacht)|3rd Panzergrenadier Division]], the [[29th Infantry Division (Wehrmacht)|29th Panzergrenadier Division]] (both newly reconstituted in France after their destruction at [[Battle of Stalingrad|Stalingrad]]) and the [[23rd Infantry Division (Wehrmacht)|26th Panzer Division]]. The latter was deployed at [[Salerno]] on 9 July, while the 29th Panzergrenadier Division was sent to [[Foggia]] mid-June and the 3rd Panzergrenadier Division was deployed north of [[Rome]] in the first days of July. Meanwhile, on 24 June, the "Reichsführer-SS"' Brigade had been moved to [[Corsica]], and mid-July the command of the 76th Panzerkorps (General [[Traugott Herr]]) also arrived.
[[Costruzione|Costruito]] tra il febbraio 1916 ed il febbraio 1917, l’Acerbi apparteneva alla [[Classe Sirtori (cacciatorpediniere)|classe Sirtori]].
 
== Transfer of German forces to Italy ==
Nella [[notte]] tra il 14 ed il 15 maggio 1917 il [[Canale d'Otranto]] fu oggetto di un duplice attacco austroungarico volto sia a distruggere i ''drifters'', [[peschereccio|pescherecci]] armati che pattugliavano lo [[Blocco del canale d'Otranto|sbarramento antisommergibile del Canale d’Otranto]] (ne furono affondati 14 dalle 4.20 alle 5.47 ad opera degli esploratori austro-ungarici [[SMS Saida|''Saida'']], [[SMS Helgoland|''Helgoland'']] e [[SMS Novara (1912)|''Novara'']]), sia, come [[diversivo|azione diversiva]], a distruggere un [[convoglio navale|convoglio]] italiano diretto in [[Albania]] (nello scontro, protrattosi dalle 3.06 alle 3.45, i cacciatorpediniere austroungarici Csepel e Balaton avevano affondato il piroscafo Carroccio ed il cacciatorpediniere Borea, unica unità di scorta, e danneggiato gravemente il piroscafo verità e più lievemente il piroscafo Bersagliere): alle 4.50 del 15 maggio, in seguito a [[notizia|notizie]] di tali attacchi (giunte 40 minuti prima), uscirono in mare i cacciatorpediniere Rosolino Pilo ed [[Antonio Mosto (cacciatorpediniere)|''Antonio Mosto'']] e l'[[incrociatore leggero]] inglese ''Bristol'', che fecero [[rotta navale|rotta]] per nordest onde intercettare la formazione navale nemica<ref name="Favre"/>. Alle 5.36 partì anche l'Acerbi (che alle 3.30 era con le caldaie accese e pronto a partire entro mezz'ora), al comando del capitano di corvetta Vannutelli, facente parte di una formazione che comprendeva l'incrociatore britanico Dartmouth (nave di bandiera del contrammiraglio italiano Alfredo Acton) ed il cacciatorpediniere Simone Schiaffino, cui si aggregò alle 7.40 anche l'[[esploratore (nave)|esploratore]] [[Aquila (esploratore)|''Aquila'']]<ref name="otranto"/><ref name="Favre"/>. Le due formazioni (Bristol, Pilo e Mosto e Dartmouth, Aquila, Acerbi e Schiaffino) si unirono tra le 6.56 e le 7.12 (non potendo però superare i 24 nodi a causa del Bristol, che necessitava di lavori e non poteva raggiungere la piena velocità), ed alle 7.45 avvistarono, con rotta 035° e velocità di 24 nodi, fumi a poppa dritta, che si rivelarono poi essere lo Csepel ed il Balaton di ritorno dall'attacco al convoglio<ref name="Favre"/>. Alle 8.10 (l'ordine fu dato, a seconda delle fonti, alle 7.50 od alle 8.00) i cacciatorpediniere e l'Aquila furono mandati contro le unità avversrie, mentre le navi maggiori manovravano per tagliare loro la via di fuga verso Cattaro<ref name="Favre"/>. L'Aquila procedeva al centro ed in testa alla formazione, alla velocità di 35-36 nodi, con Mosto e Schiaffino sulla dritta ed Acerbi e Pilo sulla sinistra<ref name="otranto"/>. Alle 8.15 le formazioni avversarie aprirono il fuoco dalla distanza di 11.400 metri: il Balaton venne raggiunto immediatamente da dei colpi, ma l'Aquila venne immobilizzato, dopo di che i due cacciatorpediniere nemici si portarono sottocosta, ottenendo così la protezione delle batterie costiere e distanziando gli inseguitori<ref name="Favre"/><ref name="otranto"/>. Alle 8.45 sopraggiunsero tuttavia sul luogo dello scontro, provenienti da sudovest, Saida, Helgoland e Novara, che diressero verso l'area dove si trovava il danneggiato ''Aquila'', pertanto, verso le 9.05, il ''Dartmouth'', il ''Bristol'', l<nowiki>'</nowiki>''Acerbi'' ed il ''Mosto'' (questi ultimi due unitisi ai due incrociatori britannici portantosi a poppavia del Bristol) si posero tra la [[nave]] immobilizzata e quelle avversarie, aprendo il [[fuoco]] alle 9.30, da 8500 metri<ref name="Favre"/>. Le tre navi austriache ripiegarono verso nordovest e la formazione anglo-italiana si pose al suo inseguimento, a distanze comprese tra 4500 e 10.000 metri, continuando a sparare: in testa alla linea alleata procedeva il Dartmouth, seguito nell'ordine dal Bristol, che tuttavia stava restando indietro, dall'Acerbi e dal Mosto<ref name="otranto"/>. L'Acerbi aprì il fuoco da 9500 metri, dopo di che, agendo su iniziativa del comandante, oltrepassò il Bristol e si portò dietro al Dartmouth<ref name="otranto"/>. A causa della lentezza del Bristol, la distanza tra le due formazioni andò crescendo, dai 6000 metri delle 9.45 ai 7400 delle 10, agli 8800 delle 10.20 ed ai 9800 delle 10.24, ed il peso del combattimento ricadde quasi unicamente sul Dartmouth e sull'Acerbi, unico cacciatorpediniere in posizione adatta per sparare<ref name="otranto"/>. Nello scontro rimasero danneggiate tutte le navi maggiori: il Bristol fu colpito tre volte, il Dartmouth quattro, il Saida una volta, l'Helgoland tre ed il Novara undici<ref name="Favre"/>. Il Dartmouth, giunto vicino al Saida, segnalò alle altre unità di seguirlo, ma l'Acerbi, avendo verosimilmente notato solo la prima bandiera del segnale (forse a causa del fumo che copriva le altre), che da sola significava "attaccare la formazione nemica", si portò a 9500 metri dai tre esploratori austroungarici (il Novara era immobilizzato e ci si preparava a rimorchiarlo) ed aprì il fuoco alle 11.15, continuando a sparare con un ritmo molto intenso ad 8000-9000 metri e serrando le distanze sino a 7300 metri<ref name="otranto">[http://books.google.it/books?id=4NrQnWliFxUC&pg=PA86&lpg=PA86&dq=destroyer+acerbi&source=bl&ots=h9GrlXdN40&sig=gqOjN1FJze5TbsPWjgSL3SSxias&hl=it#v=onepage&q=acerbi&f=false The Battle of the Otranto Straits: Controlling the Gateway to the Adriatic]</ref>. La situazione sarebbe stata favorevole per attaccare se l'Acerbi fosse stato coperto dagli incrociatori britannici, ma tale supporto non vi fu, pertanto il cacciatorpediniere si ritrovò da solo sotto il tiro delle artiglierie di Saida, Helgoland e Novara, e, a causa del fuoco nemico, non poté avvicinarsi a sufficienza per poter lanciare i siluri<ref name="otranto"/>. Successivamente uno dei cannoni dell'Acerbi s'inceppò, pertanto la nave dovette ritirarsi a 10.000-11.000 metri per risolvere il problema; mentre tale opera era in corso, la nave fu sottoposta ad un attacco aereo, ed alle 11.36 venne captato via radio l'ordine del Dartmouth alle altre navi di riunirsi, pertanto l'Acerbi ritornò insieme al resto della formazione, rinunciando all'attacco e riferendo al Dartmouth che uno degli esploratori nemici (il Novara) era immobilizzato<ref name="otranto"/>. La formazione anglo-italiana dovette infatti interrompere l’azione ed allontanarsi alle 12.05, dato che, giunti nei pressi della [[base navale|base]] austroungarica di [[Cattaro]], ne erano usciti in rinforzo agli esploratori nemici anche l'[[incrociatore corazzato]] ''Sankt Georg'' ed i cacciatorpediniere ''Tatra'' e ''Warasdinier''<ref name="Favre"/>. Durante la navigazione di rientro, alle 13.35, il sommergibile austroungarico U 89 (che in realtà era il tedesco UC 25 camuffato) attaccò la formazione (composta dal Dartmouth, dall'Acerbi, dai cacciatorpediniere italiani Impavido, Indomito ed Insidioso e dai cacciatorpediniere francesi Faulx e Casque, questi ultimi aggiuntisi alle 13), che procedeva a 20-25 nodi, colpendo il Dartmouth con un siluro a sinistra, all'altezza della plancia: abbandonato dall'equipaggio alle 14.30, l'incrociatore poté comunque essere rimorchiato a Brindisi, arrivandovi alle tre di notte<ref name="otranto"/><ref name="Favre"/>.
=== From the invasion of Sicily to the fall of Fascism ===
 
On 10 July 1943 the Allied forces launched their [[invasion of Sicily]] and soon succeeded in creating solid bridgeheads on the coastline, despite counterattacks by Italian and German forces in the island. The worsening situation immediately had consequences among the political and military leaderships of the two countries: in Rome, pessimism was steadily growing, and Ambrosio suggested Mussolini to ask for unrealistic help by Germany; among the German commands in Italy, [[Eberhard von Mackensen]] and [[Albert Kesselring]] became increasingly skeptic about the Italian defense capabilities, and asked for reinforcements.
Nella notte tra il 13 ed il 14 agosto 1917 la [[nave]] lasciò [[Venezia]] unitamente alle altre unità della propria squadriglia (i gemelli [[Vincenzo Giordano Orsini (cacciatorpediniere)|''Vincenzo Giordano Orsini'']], [[Giuseppe Sirtori (cacciatorpediniere)|''Giuseppe Sirtori'']], [[Francesco Stocco (cacciatorpediniere)|''Francesco Stocco'']]) ed ad altri sei cacciatorpediniere ([[Animoso (cacciatorpediniere 1914)|''Animoso'']], [[Ardente (cacciatorpediniere)|''Ardente'']], [[Audace (cacciatorpediniere 1914)|''Audace'']] e [[Giuseppe Cesare Abba (cacciatorpediniere)|''Giuseppe Cesare Abba'']], che formavano una squadriglia, nonché [[Carabiniere (cacciatorpediniere 1909)|''Carabiniere'']] e [[Pontiere (cacciatorpediniere)|''Pontiere'']], che formavano una sezione) per scontrarsi con un gruppo di navi nemiche, ovvero i cacciatorpediniere ''Streiter'', ''Reka'', ''Velebit'', ''Scharfschutze'' e ''Dinara'' e 6 torpediniere, che avevano appoggiato un'[[bombardamento aereo|incursione aerea]] contro la [[piazzaforte]] veneta (nell'attacco, portato da 32 velivoli, era stato colpito l'[[ospedale]] di San Giovanni e Paolo e vi erano stati 14 morti e circa 30 feriti)<ref name="Favre"/>. Solo l<nowiki>’</nowiki>''Orsini'' riuscì ad avere un breve e fugace contatto con le navi austriache, che dovette tuttavia interrompere in quanto rischiava di essere mandato contro i [[campo minato|campi minati]] avversari: persa di vista, la formazione austroungarica poté allontanarsi senza problemi<ref name="Favre"/>.
 
Hitler, more and more worried about an Italian collapse, decided to immediately send to Sicily the [[1st Parachute Division (Germany)|1st Fallschirmjäger-Division]] and then the command of the 14th Panzerkorps (general Hube) and 29th Panzergrenadier Division, ready for employment in [[Reggio Calabria]]; on 17 July it was decided to organize immediately a meeting to verify the attitude by Mussolini and his collaborators, and their resolve to continue the war.
Il 29 settembre dello stesso anno la nave uscì in mare assieme al resto della squadriglia «Orsini» (''Abba'', ''Stocco'' ed ''Orsini''), all'[[esploratore (nave)|esploratore]] [[Sparviero (esploratore)|''Sparviero'']] ed alla squadriglia cacciatorpediniere «Audace» (cacciatorpediniere ''Ardente'', [[Ardito (cacciatorpediniere 1913)|''Ardito'']] ed ''Audace'') a supporto di un bombardamento effettuato da 10 [[aereo|aerei]] [[Caproni]] del [[Regio Esercito]] contro [[Pola]]<ref name="Favre"/>. Più o meno contemporaneamente, idrovolanti austroungarici attaccarono [[Ferrara]], incendiando il [[dirigibile]] [[M 8 (dirigibile)|''M 8'']]: a sostegno di tale attacco erano in mare i cacciatorpediniere austroungarici ''Turul'', ''Velebit'', ''Huszár'' e ''Streiter'' e le torpediniere ''TB 90F'', ''TB 94F'' e ''TB 98M''<ref name="mateinfo">[http://www.mateinfo.hu/destroyer-actions.pdf THE ACTIVITIES OF DESTROYERS DURING THE WAR]</ref> (per altre fonti le torpediniere erano quattro)<ref name="Favre"/>. Avvisata di tale attacco, la formazione italiana fece [[rotta navale|rotta]] su [[Rovigno]], al largo della quale sarebbero probabilmente passate le navi avversarie di ritorno dall'azione: alle 22.03, infatti, lo ''Sparviero'' avvistò unità sconosciute ad un paio di miglia, e due minuti più tardi gli opposti gruppi aprirono il fuoco ingaggiando un breve scontro serale<ref name="mateinfo"/>. Giunte a 2000 metri di [[distanza euclidea|distanza]], le navi aprirono un intenso fuoco d'[[artiglieria]]<ref name="mateinfo"/>. Secondo fonti italiane lo scontro si concluse alle 22.30, quando le due formazioni persero il contatto per via delle loro rotte divergenti (i due gruppi ripresero poi contatto alle 22.45, perdendolo però del tutto dopo qualche minuto), senza conseguire risultati di rilievo<ref name="Favre">Franco Favre, ''La Marina nella Grande Guerra. Le operazioni navali, aeree, subacquee e terrestri in Adriatico'', pp. 191-204-207-220-222-250-271-273-284</ref>. Secondo fonti austroungariche lo ''Sparviero'' (nave di bandiera del comandante della formazione, il [[Ferdinando di Savoia-Genova (1884-1963)|Principe di Udine]]), dopo essere stato seriamente danneggiato da un colpo a segno, lasciò la linea di combattimento e pertanto anche le altre navi italiane interruppero lo scontro e si ritirarono, mentre da parte austriaca il ''Velebit'' fu danneggiato da un [[proiettile]] italiano che mise fuori uso i sistemi di governo e provocò un [[incendio]]<ref name="mateinfo"/>. Lo ''Streiter'' prese a rimorchio la nave danneggiata, ma a quel punto sopraggiunsero due cacciatorpediniere italiani che si portarono a circa mille metri, allontanandosi tuttavia dopo essere stati fatti oggetto del fuoco da parte dello ''Streiter'', del ''Velebit'' e delle torpediniere<ref name="mateinfo"/>.
 
The meeting took place near [[Feltre]] on 19 July 1943; on the same day, [[Bombing of Rome|Rome suffered a heavy bombing by over 500 Allied bombers]], which accelerated maneuvers by monarchists, high military officers and even part of the Fascist leadership, more and more concerned with finding a way out of the war. The Feltre meeting had little use; Mussolini, despite pleas by Ambrosio to clearly present the critical situation of Italy and to ask for freedom of action to whitdraw from the war, proved to be weak and undecided and only asked for more German help in the defense of Italy, while Hitler made an exhausting speech in favour of fighting till the end. Moreover, Hitler gave an optimistic view of the situation and refused the exaggerated Italian requests for more land and air support, mentioning technical and operative difficulties; however, he did not either adhere to the vehement requests by [[Alfred Jodl|Jodl]], Keitel and [[Walter Warlimont|Warlimont]], who asked to create an unified command in Italy under German control, to move south (towards the regions attacked by the Allies) the many Italian troops that were in [[Northern Italy]], and to give command of the Axis forces in the theatre to General [[Wolfram von Richtofen]].
Il 16 novembre 1917 l<nowiki>'</nowiki>''Acerbi'' lasciò Venezia e fu inviato, insieme ad ''Animoso'', ''Ardente'', ''Abba'', ''Audace'', ''Stocco'' ed ''Orsini'', a contrasto del [[bombardamento navale|bombardamento]] effettuato dalle [[nave da battaglia|corazzate]] [[k.u.k. Kriegsmarine|austroungariche]] [[SMS Wien|''Wien'']] e [[SMS Budapest|''Budapest'']] contro le [[batteria (militare)|batterie d’artiglieria]] e le linee italiane di [[Cortellazzo]] (le due corazzate erano arrivate alle 10.35 davanti a Cortellazzo, aprendo quindi il fuoco contro le truppe italiane e venendo contrastate subito dalle artiglierie di terra e poi da tre attacchi aerei: dopo aver interrotto il fuoco alle 11.52 per non interferire con le proprie truppe di terra, le due unità si riportarono a tiro alle 13.30, aprendo il fuoco cinque minuti più tardi)<ref name="Favre"/>. I cacciatorpediniere, portatisi ad ovest della zona attaccata, supportarono l’attacco dei ''[[MAS 13]]'' e [[MAS 15|''15'']] che, insieme a quelli di aerei e dei sommergibili [[F 11 (sommergibile)|''F 11'']] ed [[F 13 (sommergibile)|''F 13'']], contribuì a disturbare l’azione nemica, sino al ritiro delle due corazzate<ref name="Favre"/>.
 
After the meeting, Hitler became convinced that he had succeeded in lifting Mussolini’s morale, and therefore, despite warnings by field marshal [[Erwin Rommel]] (who had been put in charge of the forces that were being organized in [[Bavaria]] for intervention in case of a defection of Italy), who was worried about the fate of the German troops in Sicily and [[Southern Italy]] in case of an Italian “betrayal” and interruption of the communication through the [[Brenner Pass]], on 21 July Hitler decided to suspend the planning of “Alaric” and to authorize the dispatch of important German reinforcements to Italy. Right on 25 July, before to learn of the fall of Mussolini, Hitler approved the dispatch of six Heer divisions, including an armoured division, and three Waffen-SS divisions, while Rommel and his headquarters (which was being established in [[Munich]]) were sent to [[Thessaloniki]] to organize a new army group in the Balkans.
Il 28 novembre ''Sirtori'', ''Stocco'', ''Acerbi'', ''Orsini'', ''Animoso'', ''Ardente'', ''Ardito'', ''Abba'' ed ''Audace'', insieme agli esploratori [[Aquila (esploratore)|''Aquila'']] e [[Sparviero (esploratore)|''Sparviero'']], partirono da [[Venezia]] e, insieme ad alcuni [[idrovolante|idrovolanti]] di [[ricognizione]], si posero alla ricerca di una formazione austroungarica che aveva attaccato le coste italiane<ref name="Favre"/>. I cacciatorpediniere [[Grado (cacciatorpediniere)|''Triglav'']], ''Reka'' e ''Dinara'' e le torpediniere ''TB 78'', [[T 3 (torpediniera Italia)|''79'']], ''86'' e ''90'' avevano infatti danneggiato un [[treno]] e le linee [[ferrovia|ferroviaria]] e [[telegrafo|telegrafica]] alle [[foce|foci]] del [[Metauro]], mentre un secondo gruppo, composto dai cacciatorpediniere ''Dikla'', ''Streiter'' ed ''Huszar'' e da quattro torpediniere, aveva infruttuosamente attaccato dapprima [[Porto Corsini]] e poi [[Rimini]]<ref name="Favre"/>. Le due formazioni si erano poi riunite, iniziando la [[navigazione]] di rientro e subendo alcuni attacchi da parte di [[idrovolante|idrovolanti]]<ref name="Favre"/>. Le navi italiane dovettero rinunciare all'inseguimento allorché giunsero in vista di quelle nemiche nei pressi di [[Capo Promontore]], troppo vicino a [[Pola]], principale base navale austroungarica<ref name="Favre"/>.
 
=== German countermeasures after 25 July ===
==== 1918 ====
 
Hitler and the German leadership were thus taken by surprise by [[25 Luglio|the fall of Mussolini on 25 July]]; due to wrong information from the ambassador [[Hans Georg von Mackensen|Von Mackensen]] and by the military attacché Von Rintelen, they did not think that the meeting of the [[Grand Council of Fascism]] could threaten the Fascist regime, and they instead thought that Mussolini would be able to strenghtn collaboration with the [[Third Reich]]. The news of the fall of Mussolini and the creation of a military government led by Marshal [[Pietro Badoglio]] surprised and enraged Hitler; he immediately understood that, despite assurances by Badoglio and Italian diplomats, the change of regime was a prelude to an Italian defection, which would endanger the German forces fighting in Southern Italy and the entire Wehrmacht presence in Southern Europe.
Il 10 febbraio 1918 la nave fu inviata a [[Porto Viro|Porto Levante]] insieme all'esploratore ''Aquila'' ed ai cacciatorpediniere ''Sirtori'', ''Stocco'', ''Ardente'' ed ''Ardito'' (la formazione era al comando del [[capitano di fregata]] Pietro Lodolo, e per alcune fonti ne faceva parte anche il [[MAS 18|''MAS 18'']]) per fornire eventuale appoggio all'[[incursione]] di [[Motoscafo Armato Silurante|MAS]] divenuta poi nota come [[beffa di Buccari]]<ref name="Favre"/>. Le navi, ormeggiatesi a Porto Levante, si tennero pronte ad intervenire per ordine del Comando in Capo di Venezia (per altre fonti incrociarono con funzioni di protezione<ref name="danieleranocchia">[http://www.danieleranocchia.it/naval_history/grande_guerra.htm La Grande Guerra]</ref>), ma il loro intervento non fu necessario<ref name="Favre"/>.
 
At first Hitler thought about intervening immediately with the forces already on site to occupy Rome and arrest Badoglio, the king and the members of the new government; however he soon changed mind and, together with Jodl and Rommel (whom had been urgently recalled from Greece) he decided to re-activate the planning of Operation Alarich, to create a detailed plan to react to the Italian defection and swiftly occupy the Italian peninsula, after sending enough reinforcements. Kesselring was told to be ready to the change of sides and to prepare the whitdrawal of his forces from Sicily, Sardinia and Southern Italy; new directives were issued, with new operational plans.
Nella notte tra il 13 ed il 14 maggio dello stesso anno l<nowiki>'</nowiki>''Acerbi'', l<nowiki>'</nowiki>''Orsini'', il ''Sirtori'', lo ''Stocco'' e l<nowiki>'</nowiki>''Animoso'', insieme alle torpediniere costiere [[9 PN (torpediniera)|''9 PN'']] e [[10 PN (torpediniera)|''10 PN'']] ed ai ''[[MAS 95]]'' e [[MAS 96|''96'']], fornirono supporto al fallimentare tentativo di attacco del [[barchino saltatore|barchino silurante]] «Grillo» contro la [[base navale|base]] di Pola<ref name="Favre"/><ref name="danieleranocchia"/>. L'operazione, al comando del [[capitano di fregata]] [[Costanzo Ciano]], era già stata tentata ma interrotta nelle notti tra l'8 ed il 9 aprile, tra il 12 ed il 13 aprile, tra il 6 ed il 7 maggio, tra il 9 ed il 10 maggio e tra l'11 ed il 12 maggio<ref name="Favre"/>. Le navi lasciarono Venezia alle 17.30 del 13 maggio<ref name="Favre"/>. I MAS rimorchiavano il barchino «Grillo», il cui rimorchio, giunti nel punto previsto, venne lasciato alle 2.18<ref name="Favre"/><ref name="danieleranocchia"/>. L'attacco del «Grillo» si svolse tra le 3.16 e le 3.18, senza conseguire risultati e portando alla distruzione del barchino<ref name="Favre"/>. I MAS, illuminati dai [[proiettore|proiettori]] alle 3.35 e poi alle 3.40, si allontanarono e si riunirono ai cacciatorpediniere in appoggio alle cinque del mattino, dirigendo quindi per tornare in porto<ref name="Favre"/>.
 
In a matter of few days, the “Siegfried”, “Konstantin” and “Kopenhagen” plans (ready since May) were confirmed, and new operations were studied: “Schwartz”, to capture the Italian government in Rome; “Achse”, to capture the Italian fleet; [[Gran Sasso raid|“Eiche”]], to free Mussolini from captivity; “Student”, to capture Rome. On 28 July, Hitler reviewed the operational planning: the “Konstantin” and “Alarich” plans were combined into a single plan for the occupation of Italy and the Balkans, which was called “Achse”. On 5 August, on the advice of Admiral Ruge and because of the strenghtening of the Italian defenses of Rome, the “Schwartz” plan was abandoned. More problem for Hitler and the German leadeship came from a lack of detailed information about Mussolini’s fate and the refusal of Victor Emanuel III to meet Hitler, which would have been an occasion for a sudden attack on the new Italian leadership.
Nella notte tra il 1° ed il 2 luglio 1918 i cacciatorpediniere ''Acerbi'', ''Orsini'', ''Sirtori'', ''Stocco'', [[Giuseppe Missori (cacciatorpediniere)|''Giuseppe Missori'']], [[Giuseppe La Masa (cacciatorpediniere)|''Giuseppe La Masa'']] ed ''Audace'' fornirono supporto a distanza ad una formazione composta da sette torpediniere (la squadriglia composta dalle torpediniere costiere [[64 PN (torpediniera)|''64 PN'']], [[65 PN (torpediniera)|''65 PN'']], [[66 PN (torpediniera)|''66 PN'']], [[40 PN (torpediniera)|''40 PN'']] e [[48 OS (torpediniera)|''48 OS'']], più, in appoggio, le torpediniere d'alto mare [[Climene (torpediniera 1909)|''Climene'']] e [[Procione (torpediniera 1906)|''Procione'']]) che bombardò le linee austro-ungariche tra [[Cortellazzo]] e [[Caorle]] (procedendo a bassa velocità tra le due località) e simulò poi uno [[sbarco]] (allo scopo furono impiegate le torpediniere [[15 OS (torpediniera)|''15 OS'']], [[18 OS (torpediniera)|''18 OS'']] e [[3 PN (torpediniera)|''3 PN'']] ed alcuni [[pontone|pontoni]] da sbarco fittizi a rimorchio) per distrarre le truppe nemiche e favorire l'avanzata italiana<ref name="Favre"/>. Il gruppo dei cacciatorpediniere si scontrò anche con i cacciatorpediniere austroungarici ''Csikós'' e [[Zenson (cacciatorpediniere)|''Balaton'']] e con due torpediniere (la ''TB 83F'' e la ''TB 88F''), in mare a supporto di un attacco aereo su Venezia<ref name="Favre"/><ref name="mateinfo"/>: le unità avversarie, partite da Pola nella tarda serata del 1° luglio, erano state infruttuosamente attaccate con un [[siluro]] da un [[MAS]] (lanciato contro il ''Balaton'', che aveva una [[caldaia]] in [[avaria]]) alle prime [[luce|luci]] dell'[[alba]] del 2 luglio<ref name="mateinfo"/>. I cacciatorpediniere italiani giunsero in vista di quelli austriaci alle 3.10 ed aprirono il fuoco, provocando l'immediata reazione delle artiglierie delle unità austroungariche: ne seguì un breve scambio di cannonate, durante il quale le navi avversarie, specie il ''Balaton'', ebbero alcuni [[danno|danni]]<ref name="Favre"/>. Nel corso dello scontro lo ''Stocco'' rimase danneggiato, con alcuni morti e feriti tra l'equipaggio<ref name="Favre"/> ed un incendio a bordo che lo costrinse a fermarsi (dopo aver evitato due [[siluro|siluri]] manovrando), pertanto l<nowiki>'</nowiki>''Acerbi'' , si dovette fermare per prestare assistenza alla nave gemella<ref name="mateinfo"/>. Il ''Balaton'', colpito da diversi proiettili sul [[ponte (nautica)|ponte]] di [[prua]], si portò in posizione più avanzata, mentre ''Missori'', ''Audace'' e ''La Masa'' si scontroavano con il ''Csikós'' e le due torpediniere: entrambe le formazioni lanciarono i propri siluri senza risultato, mentre il ''Csikós'' fu colpito da un proiettile nel locale caldaie poppiero ed anche le due torpediniere furono colpite da un proiettile ciascuno<ref name="mateinfo"/>. Dopo qualche tempo le unità italiane si allontanarono e proseguirono nel loro compito, mentre quelle austriache ripiegavano verso Pola<ref name="Favre"/><ref name="mateinfo"/>.
 
While the planning was underway, the Wehrmacht command had begun the transfer of the divisions needed to enact the operations at the moment of the Italian defection. Starting on 27 July, the [[2nd Parachutist Division (Germany)|2. Fallschirmjäger-Division]] of General [[Hermann Bernhard Ramcke]] was moved by air from Southern France to the [[Pratica di Mare Air Base]], a move that surprised both the Italian commands and Kesselring, as neither had been warned beforehand. Meanwhile, on 31 July, General [[Kurt Student]] (commander of the 11th Airborne Corps, and due to take command of Ramcke’s paratroopers) and SS-[[Hauptsturmführer]] [[Otto Skorzeny]] reached Kesselring in [[Frascati]] and illustreted to him the “Schwarz” plan, which was however soon cancelled by Hitler.
Nella mattinata del 4 novembre 1918 l<nowiki>'</nowiki>''Acerbi'', l<nowiki>'</nowiki>''Orsini'', il ''Sirtori'' e lo ''Stocco'' salparono da Venezia insieme alla vecchia [[corazzata]] [[Emanuele Filiberto (nave da battaglia)|''Emanuele Filiberto'']] (nave di bandiera del [[contrammiraglio]] Rainer, al comando dell'operazione), per prendere possesso di [[Fiume (Croazia)|Fiume]]<ref name="La Racine-SM">R. B. La Racine, ''In Adriatico subito dopo la vittoria'', su ''Storia Militare'' n. 210 – marzo 2011, pp. 18-19</ref>. Durante la [[navigazione]] l<nowiki>’</nowiki>''Acerbi'', al comando del [[capitano di corvetta]] Po, fu distaccato per l’[[occupazione]] della [[città]] di [[Abbazia (Croazia)|Abbazia]]: a mezzogiorno del 4 novembre il cacciatorpediniere attraccò ad Abbazia dove sbarcò un [[plotone]] di marinai con una [[mitragliatrice]] ed issò una [[bandiera]] italiana, ma la situazione rimase piuttosto incerta stante la tensione tra le componenti italiana (che in tale località era la minoranza) e jugoslava (che protestò per l’alzabandiera del vessillo italiano), pertanto la presa di possesso fu meramente formale, senza una vera e propria occupazione<ref name="La Racine-SM"/>. Nel corso della stessa giornata la nave fu inviata anche a [[Volosca]], per verificare la situazione e prendere contatto (l’isola venne poi occupata dal Sirtori l’11 novembre)<ref name="La Racine-SM"/>. L'8 novembre l<nowiki>’</nowiki>''Acerbi'' fu inviata a [[Lussino]], dove già si trovava l<nowiki>'</nowiki>''Orsini'', perché anche in questa isola (a maggioranza italiana ma con la presenza di numerosi militari jugoslavi) vi erano forti tensioni, che vennero risolte solo il 20 novembre con la definitiva occupazione dell’isola, il disarmo e lo sgombero dei militari jugoslavi, trasferiti a Fiume, ed il sequestro di materiale bellico, un panfilo ed alcune navi mercantili<ref name="La Racine-SM"/>.
 
Meanwhile, at 12:00 on 26 July Rommel had returned from Thessaloniki to [[Rastenburg]], leaving command of the new [[Army Group F]] to Field Marshal [[Maximilian von Weichs]], and on 29 July he assumed command in Munich of a fake command, denominated ''Auffrischungsstab München'', to hide the creation of a new army group which on 14 August would me boved to [[Bologna]] under the name of [[Army Group B]], and would enact Operation “Achse” in Northern Italy.
=== Gli anni Venti e Trenta ===
 
At 02:15 on 26 July the [[215th Infantry Division (Wehrmacht)|215th Infantry Division]] was the first German unit to enter Italy, heading for [[Ligury]], while the [[Panzer Corps Feldherrnhalle|Panzergrenadier Division ''Feldherrnhalle'']] and the [[715th Infantry Division (Wehrmacht)|715th Infantry Division]] were deployed to protect the passage through the alpine passes on the French-Italian border. The Italian commands protested and tried to stop the inflow of the divisions with some pretexts, but Kesselring intervened through the Italian Supreme Command on 1 August, and the 305th Division marched on foot first to [[Genoa]] and then to [[La Spezia]]. Meanwhile, more German units entered Italy: the [[76th Infantry Division (Wehrmacht)|76th Infantry Division]], on 2 August, heading for [[Savona]]; the [[94th Infantry Division (Wehrmacht)|94th Infantry Division]], on 4 August, heading for [[Susa, Piedmont|Susa]] and then [[Alessandria]]; the 87th Corps headquarters (General [[Gustav von Zangen]]), which on 11 August established themselves in [[Acqui]] and assumed command of the three newly arrived German divisions.
Nel 1920 la nave fu sottoposta a modifiche che videro la sostituzione dei 6 [[cannone|cannoni]] singoli da 102/35&nbsp;mm [[Schneider]]-[[Armstrong]] 1914-15 con quelli del più moderno modello da 102/45 Schneider-Armstrong 1917<ref name="Marina Militare">[http://www.marina.difesa.it/storiacultura/storia/almanacco/Pagine/PQRS/stocco.aspx Marina Militare]</ref><ref name="navypedia">[http://www.navypedia.org/ships/italy/it_dd_sirtori.htm Navypedia]</ref>.
 
Some conflicts and incidents between the German troops on passage and the Italian commands and units took place also at Brenner Pass; Romme, worried by the news of a strenghtening of the Italian garrison and minino of the mountain passes, senth the Kampfgruppe Feuerstein south, with part of the 26th Panzer Division and the [[44th Infantry Division (Wehrmacht)|44th Infantry Division]], with orders to say that they had been sent to help Italy against the common enemy. The Italian Supreme Command in Rome and General Gloria, commander of the Italian 26th Corps in [[Bozen]], complained vehemently and threatened an armed reaction, but after Kesselring’s intervention on 1 August the crisis passed and the German units were allowed to procede; the 44th Infantry Division reached Bozen, assume control of the Brenner Pass and thus ensured the transalpine communications with Germany.
Nel 1929 l'unità, insieme ai gemelli ''Sirtori'' e ''Stocco'' ed all'[[Ippolito Nievo (cacciatorpediniere)|''Ippolito Nievo'']], appartenente alla [[Classe Rosolino Pilo|classe Pilo]], formava la X Squadriglia Cacciatorpediniere, che, insieme alla IX (cinque unità) ed all'esploratore ''Aquila'', costituiva la 5<sup><small>a</small></sup> Flottiglia della Divisione Speciale, che includeva anche l'esploratore [[Brindisi (esploratore)|''Brindisi'']]<ref>[http://www.marina.difesa.it/documentazione/editoria/marivista/Documents/2011/09_settembre/La_Regia_Marina.pdf La Regia Marina tra le due guerre mondiali]</ref>. Il 1° ottobre 1929 l’Acerbi, come le unità gemelle, fu declassato a [[torpediniera]]<ref name="Marina Militare"/>.
 
Right after July 25, Hitler had initially decided to immediately send to Italy the [[1st SS Panzer Division Leibstandarte SS Adolf Hitler]] and the [[2nd SS Panzer Division Das Reich]], despite the precarious situation on the Eastern Front. Protests by Field Marshal Von Kluge and further worsening of the situation in the East forced however Hitler to send only the Leibstandarte Adolf Hitler, without its heavy weapons. This division crossed the Brenner Pass on 3 August and then placed itself between [[Parma]] and [[Reggio Emilia]]. This was soon followed by the transfer of the [[65th Infantry Division (Wehrmacht)|65th Infantry Division]] from [[Villach]] to the [[Ravenna]]-[[Rimini]] area, and the transfer of the [[24th Panzer Division (Wehrmacht)|24th Panzer Division]] from [[Tyrol]] to [[Modena]] by 30 August. On 3 August the Waffen-SS [[Generaloberst]] [[Paul Hausser]] arrived in Reggi Emilia with the headquarters of the 2nd SS-Panzerkorps, to take command of the three incoming divisions.
Nel 1935 comandava l’unità il [[tenente di vascello]] Adriano Foscari, futura Medaglia d'oro al valor militare<ref>[http://www.marina.difesa.it/storiacultura/storia/medaglie/Pagine/foscariadriano.aspx Marina Militare]</ref>.
 
The last German division to enter Italy was the [[71st Infantry Division (Wehrmacht)|71st Infantry Division]], which was transferred from [[Denmark]] to an area north of [[Ljubljana]] on 7 August, and from 25 August started entering [[Friuli]] on orders from Rommel, who feared possible hostile actions by the Italians and the mining of the Eastern alpine passes. After another conflict with the Italian Supreme Command, which once again menaced to result in armed clashes, the situation was solved by the intervention of Von Rintelen, and the Division advanced without problems towards [[Gemona]], [[Gorizia]] and [[Opicina]]; by 2 September it was fully deployed in the [[Julian March]].
=== La seconda guerra mondiale ===
 
== 8 September 1943 ==
All’ingresso dell’[[Italia]] nella [[seconda guerra mondiale]], il 10 giugno 1940, l<nowiki>’</nowiki>''Acerbi'' e l<nowiki>’</nowiki>''Orsini'' avevano base a [[Massaua]], in [[Eritrea]], base italiana sul [[Mar Rosso]]<ref name="ilcornodafrica"/>.
=== End of an alliance ===
 
Right after the removal of Mussolini from power, the new government led by Badoglio had officially proclaimed the decision to continue the war alongside Germany, and kept reassuring the German leadership of its loyalty to the Axis cause, but at the same time it started a series of confused attempts to start secret negotiations with the Allies, to get out of the war and to avoid the consequences of a sudden change of sides. The need to gain time induced the new Italian government to make a show of loyalty to the alliance, asking for a more active participation of the German ally in the defense of the Italian peninsula and thus for the arrival of more German divisions, which however worsened the German threat on Italy.
Nella mattinata del 27 giugno 1940 salpò da Massaua insieme ai cacciatorpediniere [[Leone (esploratore)|''Leone'']] e [[Pantera (esploratore)|''Pantera'']] per soccorrere il [[sommergibile]] [[Perla (sommergibile)|''Perla'']], che si era incagliato in seguito ad esalazioni di [[cloruro di metile]] che avevano intossicato gran parte dell’[[equipaggio]]; tuttavia la formazione (privata del ''Leone'', rientrato per [[avaria|avarie]]) dovette invertire la rotta quando fu avvisata che una forza navale nemica di maggiori dimensioni – [[incrociatore leggero]] [[HMNZS Leander|''Leander'']] e cacciatorpediniere ''Kandahar'' e ''Kingston'' – era uscita in [[mare]] per attaccare il ''Perla''<ref>[http://www.xmasgrupsom.com/sommergibili/perla.html Xmasgrupsom]</ref><ref>Giorgio Giorgerini, ''Uomini sul fondo. Storia del sommergibilismo italiano dalle origini ad oggi'', p. 411</ref>.
 
The Italian leadership tried to keep a grip on this difficult phase by alternating requests for help and obstructionism towards the incoming German forces, and asking to deploy the German divisions in the South, on the frontline; already on 31 July, during the meeting between Ambrosio and Kesselring, arguments began about the positioning and role of the new German divisions. At the conference held in [[Tarvisio]] on 6 August between the Italian Foreign Minister [[Raffaele Guariglia]], Ambrosio, [[Joachim von Ribbentrop]] and Keitel (with the menacing presence of SS as guards), the mutual distrust became apparent; Ambrosio asked to increase the German divisions from nine to sixteen, but to deploy them in Southern Italy against the Allies, while Keitel and Warlimont instead stated that the new German units would be deployed in Central and Northern Italy, as a strategic reserve force.
Il 6 (per altre fonti l'8<ref name="scpl">[http://www.ilcornodafrica.it/st-melecascapaflow.pdf La Scapa Flow del Mar Rosso.]</ref>) agosto dello stesso anno, intorno alle sei di sera, l<nowiki>'</nowiki>''Acerbi'', mentre era ormeggiata a Massaua, fu colpita da una [[bomba (ordigno)|bomba]] durante un'[[bombardamento aereo|incursione aerea]] da parte di tre velivoli inglesi<ref name="ilcornodafrica"/>. L'ordigno colpì la nave all'altezza del terzo fumaiolo, esplodendo nella sala macchine e danneggiando gravemente anche la coperta ed il fumaiolo soprastanti, oltre a causare numerose vittime. Rimasero uccisi 15 uomini, mentre i feriti furono circa il doppio<ref name="ilcornodafrica">http://www.ilcornodafrica.it/st-relitti.pdf</ref>. I [[danno|danni]] furono tanto gravi da risultare pressoché irreparabili: la nave, non più in grado di prendere il mare<ref>[http://www.ilcornodafrica.it/st-melecatragedia.pdf L'affondamento del cacciatorpediniere Francesco Nullo]</ref>, fu dapprima rimorchiata in bacino e quindi posta in disarmo ormeggiata ad una banchina, venendo privata di quattro (o cinque) dei pezzi da 102&nbsp;mm e di parte delle [[mitragliera|mitragliere]], che furono impiegate per rafforzare le difese contraeree di Massaua<ref name="ilcornodafrica"/>. Quattro cannoni da 102/45, in particolare, vennero postati sull'isola di Dahlak Kebir, vicino a Ras Cambit, per armare la batteria antinave "Acerbi-Ma 314", mentre un altro andò, con altri due da 102/35 prelevati dal posamine Ostia, ad armare la batteria antinave Ma 370 posta vicino al porto di Massaua<ref>[http://www.marina.difesa.it/documentazione/editoria/bollettino/Documents/2011/giugno/Meleca_giu_2011.pdf Le batterie costiere della Regia Marina in Eritrea]</ref><ref name="scpl"/>.
 
A last meeting was held in Bologna on 15 August, between generals Roatta and Jodl, the latter accompanied by Rommel (whom had just been made commander of the new Army Group B in Northern Italy) and by a SS guard of the ''Leibstandarte Adolf Hitler''; the Germans consented to recalling to Italy part of the [[Fourth Army (Italy)|Italian 4th Army]] from Southern France, but they were alarmed by Roatta’s plans about a positioning of the German forces that, in case of defection, seemed to expose them to the risk of becoming isolated and being destroyed by the Allied forces. The meeting was a failure and convinced the German generals that, despite reassurances from Roatta (possibly not yet informed by Ambrosio of the contacts that were underway with the Allies), who assured that Italy would not defect and added “we are not Saxons!”, that an Italian defection was imminent. The atmosphere at the meeting was so tense that the German delegation refused food and beverages offered by the Italians, fearing they would be poisoned.
Le fonti divergono circa la sorte finale toccata all'Acerbi, ormai ridotta ad un relitto galleggiante. Secondo una versione il 4 aprile 1941, pochi giorni prima dell'[[occupazione]] inglese di Massaua, la torpediniera fu nuovamente colpita dai [[bombardiere|bombardieri]] britannici ed affondò nel [[porto]] della [[città]]<ref name="ilcornodafrica"/><ref name="scpl"/>. Secondo altre fonti, invece, l'Acerbi, ancora galleggiante, prima della caduta della piazzaforte venne rimorchiata sino all'imboccatura del porto militare e qui autoaffondata (secondo le carte redatte dalle autorità inglesi, il relitto dell'Acerbi fu infatti trovato in quella posizione), insieme ai piroscafi Moncalieri, XXIII Marzo, Oliva ed Impero, in modo da bloccarne l'accesso, nell'ambito del piano predisposto per bloccare e rendere inutilizzabile il porto di Massaua prima che questo venisse conquistato dalle forze britanniche<ref name="scpl"/>.
 
The preparations against an Italian “betrayal” therefore proceeded swiftly; detailed dispositions were issued to the subordinated commands, which in turn studied detailed operative plans to act with speed and efficence. The German leadership only expected a weak resistance by the Italian armed forces, and counted on quickly solvine the situation. General Von Horstig, a representative of the weaponry office of the Wehrmacht in Italy, was already preparing plans for the plunder of the resources and the systematic destruction of factories and infrastructures of military importance in Southern Italy. At the end of August, Hitler sent to Italy his new representatives: the diplomat [[Rudolf Rahn]] (who replaced the ambassador Von Mackensen) and General [[Rudolf Toussaint]], who replaced Von Rintelen as military attaché.
== Note ==
<references/>
 
Kesselring had already authorized General Hans Hube (in command of the 14th Panzerkorps), on orders from OKW, to organize the whitdrawal of his four divisions from Sicily and its redeployment in [[Calabria]], which Hube skillfully carried out on 17 August (Operation Lehrgang). The vast majority of the German troops in Sicily, after an effective [[fighting retreat]], managed to cross the [[Straits of Messina]] and even to save a great part of the heavy equipment. In the following days Hube deployed the 14th Panzerkorps (16th Panzer Division, 15th Panzergrenadier Division, and Hermann Goring Division) in the area between [[Naples]] and [[Salerno]], while the 1st Parachutist Division was sent to [[Abulia]] and General Herr with the 76th Panzerkorps assumed the defense of [[Calabria]] with part of the 26th Panzer Division and the 29th Panzergrenadier Division; his orders were to carry out delaying actions in case of Allied attack across the straits.
{{Classe Sirtori}}
{{portale|marina}}
 
On 3 September, indeed, a Corps of the [[Eighth Army (United Kingdom)|British Eighth Army]] of General [[Bernard Law Montgomery]] crossed the straits northwest of [[Reggio Calabria]] ([[Operation Baytown]]), landed without meeting much resistance and started a cautious advance along the coastal roads towards [[Pizzo Calabro]] and [[Crotone]]. The 76th Panzerkorps avoided engagement and slowly retreated northwards.
<nowiki>[[Categoria:Cacciatorpediniere della Regia Marina]]</nowiki>
 
=== The armistice ===
 
After some unrealistic and fruitless attempts by personalities of minor importance (embassy official [[Blasco Lanza D'Ajeta]], Foreign Ministry official [[Alberto Berio]], industrialist [[Alberto Pirelli]]) to contact the Allies and start negotiations for an exit of Italy from the war, possibly avoiding the dangerous consequences of a surrender at discretion and a German occupaton, on 12 August General [[Giuseppe Castellano]], Ambrosio’s counselor, left Rome for [[Madrid]], where he met the British ambassador Sir [[Samuel Hoare]]. The latter informed Churchill and then directed Castellano to [[Lisbon]] where, on 17 August, the first meeting with the Allied emissaries, General [[Walter Bedell Smith]] and politic advisers [[Kenneth W. Strong]] and [[George Frost Kennan]], took place. The Allies demands, definitely established by the Allied governments at the end of July, called for a completely unconditional surrender; Castellano thus found himself in great hindrance, as the instructions Badoglio had given him required to bargain the exit of Italy from the war and a strong military collaboration with the Allies, including the intervention of as many as fifteen British and American divisions that were to make contemporary landings north and south of Rome simultaneously with the announcement of the armistice, in order to defend the capital and deal with the German reaction.
During a new meeting between Castellano and Bedell Smith in [[Cassibile]], Sicily, on 31 August, the Italian envoy unsuccessfully insisted again to be made apart of the Allied operative details; the intervention of an American airborne division to protect Rome and the Italian government (Operation Giant 2) was agreed. On 1 September, after a consultation between the king, Guariglia and Ambrosio, the Allies were radioed the reception of the conditions of the armistice.
 
On 3 September, Castellano and Bedell Smith therefore signed the [[armistice of Cassibile]], in presence of the representatives of the British and American governments, [[Harold Macmillan]] and [[Robert Daniel Murphy]]; there was however a grievous mistake about the timing of the announcement of the Italian surrender. The Badoglio government hoped to gain more time to organize the resistance against the German forces, delaying the announcement at least till 12 September. Only in the night of 8 September did Badoglio learn from General [[Maxwell Taylor]] (the second-in-command of the [[82nd Airborne Division]], whose intervention was planned for “Giant 2”, who had been secretly sent to Rome) that General [[Dwight Eisenhower]] would make the announcement that very evening.
Badoglio protested and vainly tried to obtain another delay; the Italian leaders and generals, extremely worried about the German reaction, made an awful impression on General Taylor, who advised the Allied command to give up Operation “Gian 2”, which he deemed to be destined to fail, given the disorganization of the sizeable Italian forces stationed around Rome.
 
In the morning of 8 September, while [[Bombing of Frascati|Allied bombers bombed Kesselring’s headquarters in Frascati]], failing their objective and causing heavy civilian casualties, and the Allied fleets approached the Gulf of [[Salerno]] to launch [[Operation Avalanche]] (the main landing of the [[United States Army North|5th American Army]] of General [[Mark Wayne Clark]]), Badoglio, more and more anxious, sent Eisenhower a [[telegram]] asking for a deferment of the announcement of the armistice. The Allied commander-in-chief, sustained by a peremptory order from [[Washington]] of the Allied heads of state, firmly rejected the tardive request, confirmed his intentions in a threatening tone, and cancelled Operation “Giant 2”.
 
At 18:00 on 8 September a hurried and dramatic Council of the Crown was held at the [[Quirinale Palace]]; the king, Badoglio, Ambrosio, Guariglia, General [[Giacomo Carboni]] (head of the [[Servizio Informazioni Militare|Military Intelligence Service]] and commander of the [[Corpo d'Armata Motocorazzato]] tasked with defending the capital), General Antonio Sorice (War Minister), Admiral [[Raffaele De Courten]] (Minister of the Navy), General [[Renato Sandulli]] (Minister of the Air Force), General Paolo Puntoni, General Giuseppe De Stefanis, and Major Luigi Marchesi (secretary of Ambrosio) participated. Faced with the clear instructions transmitted by Eisenhower and the first indiscretions leaking on foreign radios about the armistice, the Italian leadership, after heated discussions where Carboni went as far as to propose that they retracted Castellano’s actions, finally agreed with Marchesi, who said that they should unavoidalby keept the world they had given to the Allies, and confirm the news. At 18:30 general Eisenhower, speaking on [[Radio Algiers]], officially announced the armistice, and at 19:42 Badoglio gave in turn the announcement from the [[EIAR]].
During the previous days, the German representatives in Rome had been given reiterated statements of loyalty to the alliance, expressed at the highest levels; on 3 September Badoglio himself had confirmed to Rahn his firm will to remain at the side of Germany, and still on 6 September General Toussaint thought that the Italians had rejected the harsh demands of the Allies. Even in the morning of 8 September, Rahn met the king and the latter reassured him about his decision not to surrender, and in the afternoon Roatta reaffirmed by telephone that news coming from abroad were a propagandist hoax. Rahn was thus taken by surprise when at 19:00 on 8 September, having been warned by Berlin about the news of the armistice, he met Guariglia whom immediately confirmed the news and told him about the exit of Italy from the war and from the Axis alliance. Rahn replied bitterly, then hastily left Rome along with Toussaint and the embassy personnel and went to Frascati, where Kesselring’s headquarters were located.
 
Despite the initial surprise, the German response, havin been accurately planned and organized in detail, was swift and effective; Hitler, who at 17:00 came back to Rastenburg after spending a few days in [[Ukraine]] at the headquarters of Field Marshal [[Erich von Manstein]], soon learned of the armistice from a [[BBC]] trasmission, and acted with extreme resolve. At 19:50, a few minutes after Badoglio had finished his announcement, the aide of General Jodl broadcasted the coded word “Achse” to all subordinated commands; it was the signal for the German forces to attack Italian forces in all the war theatres of the Mediterranean.
 
== Dissolution of Italian forces in Italy ==
=== Uncertainty and confusion ===
 
The Italian high commands, in the weeks leading to the armistice, had issued instructions for commanders and troops about the behaviour that should have been held in case of a whitdrawal from the war and possible German aggressions; these orders were the No. 111 Order issued by the Staff of the Italian Army on 10 August, the OP 44 Memorandum issued on 26 August by General Roatta (on Ambrosio’s orders) to the major peripheral commands (only twelve copies), and the No. 1 and No. 2 Memorandums issued on 6 September by the Supreme Command to the Staffs of the three armed forces, containing indications about the deployment of the forces in the different theatres.
 
These were however general guidelines, lacking details and nearly inapplicabile (also due to excessive secrecy measures); they were ineffective and they contributed, along with the vagueness of Badoglio’s message on the evening of 8 September, to confuse the peripheral commands of the Italian forces about the unexpected news of the change of sides and the aggressiveness of the German forces, thus resulting in insecurity and indecision among those commands. The situation of the Italian armed forces was worsened by the contradictory instructions issued by Ambrosio in the evening of 8 September, which restricted any initiative to mere defensive measures in case of German attacks, and by Roatta in the night of 9 September, who especially demanded to avoid turmoil and ‘seditions’ among the troops.
 
Faced with the cold efficiency of the German units, which immediately showed harsh aggressiveness and demanded surrender or collaboration with threats and intimidations, most of the Italian commanders, also fearful of the impressive reputation of military capacity of the Wehrmacht, soon abandoned any intent of resistance, with a few exceptions; the troops, left with neither orders nor leaders, often dispersed.
 
The situation of the German forces in Italy was actually a difficult one; Rommel, with his Army Group B, had the easier task of occupying the northern regions and neutralizing any resistance by Italian forces in that area, but Kesselring, in command of [[Army Group C]], was in great difficulty after September 8: after the bombing of Frascati, he barely managed to receive the communication of the coded word “Achse” and also learned of the Allied landing near Salerno, where only part of the 16th Panzer Division was stationed. At first, he feared that he would not be able to simultaneously contain the Allied advance and carry out his mission against Rome.
 
Even the OKW considered the possibilità of the loss of the eight German divisions in Southern Italy; Kesselring, however, showed great capability, and his forces fought with ability and effectiveness. Despite advice by Rommel to quickly whitdraw from Southern Italy and retreat to the [[La Spezia]]-[[Rimini]] line, Kesselring managed to avoid the isolation and destruction of his forces and also to cause trouble to the Allied bridgehead at Salerno, to counterattack with some success (after massing there the 14th and 76th Panzerkorps, with three Panzer divisions and two Panzergrenadier divisions) and then to retreat with minimal losses north of Naples, while simoultaneously carrying out the “Achse” plan and capturing Rome with part of his forces.
 
=== Fall of Rome ===
 
In order to defend the political and military leadership and to resist to a possible German attack, the Italian commands had concentrated a considerable amount of troops in the area around Rome; the main force consisted in the [[Corpo d’Armata Motocorazzato]] of General Carboni, composed of the [[132nd Armoured Division Ariete#135th Armoured Cavalry Division Ariete II|135th Armoured Division “Ariete II”]], the [[136th Armoured Division “Centauro II”]], the [[10th Motorized Division Piave]] and the [[21st Infantry Division Granatieri di Sardegna]]. Other units tasked with the defense of Rome were the [[103rd Motorised Division Piacenza]] (part of the 17th Corps of General [[Giovanni Zangheri]]), the [[12th Infantry Division Sassari]] and some battalions of the [[13th Infantry Division Re]] and [[7th Infantry Division Lupi di Toscana]]; overall, there were about 55,000 men and 200 [[armoured fighting vehicle]]s, with a numerical superiority on the German forces in the area.
The German forces near Rome consisted in the 11th Airborne Corps of General [[Kurt Student]], headquartered in Pratica di Mare; the Corps comprised the 2nd Parachutist Division (General [[Walter Barenthin]]), ready for action south of Rome, and the 3rd Panzergrenadier Division (General [[Fritz-Hubert Gräser]]), reinforced by an armoured battalion of the 26th Panzer Division (''[[kampfgruppe]] Büsing''), stationed between [[Orvieto]] and [[Lake Bolsena]], north of Rome. These units comprised about 26,000 men and some hundreds armoured fighting vehicles, and were activated by Kesselring in the evening of 8 September: already at 20:30 they attacked the [[Mezzocamino]] fuel depot, and the German paratroopers immediately started advancing south, overcoming sporadic resistance by the Piacenza Division in [[Lanuvio]], [[Albano Laziale]] and [[Ardea]].
 
After reaching the [[EUR, Rome|EUR district]] at 21:30, the 2nd Parachutist Division overpowered some units of the Piacenza and Granatieri di Sardegna Divisions and after half an hour, advancing along the [[Via Ostiensis]], reached the [[Magliana]] bridge. Meanwhile, the 3rd Panzergrenadier Division advanced from north along the [[Via Aurelia]], [[Via Cassia]] and [[Via Flaminia]], but was halted near [[Lake Bracciano]] by the Armoured Division Ariete II (General [[Raffaele Cadorna]]) and suspended its advance after some negotiations. The paratroopers, instead, went ahead with their action; fierce fighting erupted at Magliana between the German forces and the Granatieri di Sardegna, supported by armoured units of the Ariete II Division, but at 02:00 on 9 September the [[Ciampino]] airport was captured, and an hour later news came that German troops ha arrived in [[Tor Sapienza]], along [[Via Prenestina]], just eight km away from the city center.
 
More and more alarming news pushed the political and military leadership, after some uncertain orders by Ambrosio to try to contact Kesselring, to decide do abandon the city. Roatta exhorted the king and Badoglio to leave Rome by the [[Via Tiburtina]], then he ordered his forces to try to retreat to [[Tivoli]] and finally he abandoned the city himself, leaving Carboni without any order. Carboni in turn fled in civilian clothes, then re-entered the city in the morning of 10 September, when the situation was definitely compromised. General [[Umberto Utili]], head of the Operations Division of the General Staff, declared the General Staff as formally dissolved in the morning of 9 September; the subordinate commands and the troops showed signs of bewilderment and confusion.
 
Meanwhile, at 5:10 on 9 September the king and Badoglio, along with high ranking officers, dignitaries and family members, fled Rome on seven cars; without encountering any difficulties, they passed Tivoli and [[Avezzano]] and reached [[Pescara]] and later [[Ortona]], where more fleeing officers had gathered. There the king, his relatives, Badoglio, Ambrosio and Roatta boarded the [[corvette]] Baionetta, which reached [[Brindisi]] at 14:30 on 10 September, the city having already been reached by Allied troops which had safely landed in Italian-controlled [[Taranto]] (the 1st British Parachutist Division), Brindisi and [[Bari]] (two divisions of the 5th Corps) during [[Operation Slapstick]].
 
Meanwhile, the defenses of Rome had completely collapsed; in the south, the German paratroopers fought a series of sporadic fights against the Granatieri di Sardegna and units of the Ariete II at Magliana and [[Cecchignola]]; at 17:00 on 9 September, Magliana was abandoned by Italian forces and the 2nd Parachutist Division proceeded with its advance, arrivino near [[Porta San Paolo]] in the evening. In the north, the AFVs of the 3rd Panzergrenadier Division had restarted their advance; after fighting against the bulk of the Ariete II, they captured [[Manziana]], [[Monterosi]] (at 14:00) and [[Bracciano]] (at 17:00), while more German units of the same Division advanced towards [[Civitavecchia]] and kampfgruppe Büsing reached [[Cesano]] and [[La Storta]].
 
At 20:00 the Piave and Ariete II divisions, as they had been ordered, left their positions and retreated towards Tivoli, while units of the Sassari and Re divisions were deployed along the Via Cassia and Via Salaria. The parachutists of Major [[Walter Gericke]], whom had been parachuted at 09:00 over [[Monterotondo]] with the task of capturing the Italian Army headquarters (which however had already been abandoned), were engaged in hard fighting, which they ended in success in the evening of 9 September; meanwhile, units of the 2nd Parachutist Division attacked Porta San Paolo, two kilometres from [[Piazza Venezia]], held by Granatieri di Sardegna units and groups of civilian volunteers. The German troops, mainly consisting in veterans, overcame this resistance after some fierce fighting, and reached the center of Rome in the morning of 10 September. General [[Siegfrid Westphal]], Chief of Staff of Army Group C, had started negotiations with Colonel Giaccone of the Centauro II Armoured Division (the former “M” Armoured Division, composed of [[blackshirts]] whose allegiances were highly doubtful, which had led the Italian commands to decide to keep it away from the battle), on instructions from Kesselring and Student, in the evening of 9 September. After a series of threats and an ultimatum, Westphal obtained the capitulation of Rome by the afternoon of 10 September, after discussions with Generals Carboni and Sorice and Marshal [[Enrico Caviglia]], while German artillery was already firing directly inside the city. Westphal promised to spare the city and authorized the creation of a provisional Italian command under General [[Carlo Calvi di Bergolo]].
 
This evanescent agreement was soon revoked by the Germans; by 15 September all Italian troops were disarmed, on 23 September Calvi di Bergolo was arrested and the German and [[Italian Social Republic|RSI]] forces, under Generals Stahel and Chieli, respectively, assume control of the city, despite they stated that the status of “open city” was mantained. This status was never recognized by the Allies, and the Germans exploited it to use Rome as a key logistic junction for the supplies sent to the frontline.
 
Meanwhile, the Italian units that had retreated towards Tivoli dissolved; a considerable part of the Sassari and Piacenza divisions and of the [[211th Coastal Division (Italy)|211th Coastal Division]] escaped capture and crossed the frontline, thus joining the Allies, but most of the men of the ten Italian divisions in the area were disarmed. Only a small part of them, however, were interned or deported; the majority was allowed to return to their homes.
Overall German casualties for the capture of Rome were about a hundred dead and about 500 wounded, while Italian casualties were 984 killed, of whom 659 were soldiers, 121 civilians and 204 “unidentified”.
 
=== Disintegration of Italian forces in Southern Italy ===
 
Field Marshal Kesselring, despite being busy with avoiding the isolation of his forces and containing the Allied attacks launched in three different landing areas (Salerno, Abulia and Calabria), still managed to retain control of the situation and to carry out the tasks assigned within the “Achse” plan. He managed to quickly dissolve the Italian forces stationed in his area, to capture Rome and to disengage mobile units that were to be sent south against the Allies (the 3rd Panzergrenadier Division, after capturing Rome, reached Salerno already on 12 September), but he had to restrict himself to summarily disarm the majority of the captured soldiers, then sending them back to their homes. Consequentially, only 24,294 of the 102,340 Italian soldiers captured by Army Group C were held in captivity.
 
Italian forces in [[Campania]] were weak and were quickly overwhelmed by the German troops; the [[Naples]] garrison was destroyed after two days of resistance by a German armoured column, and its commander, Colonel Olivier, was executed. The 19th Corps was dissolved on 11 September after its commander, General Del Tetto, abandoned his command post to take shelter in a monastery; the [[9th Motorized Division Pasubio]] (stationed in the Naples area), which was still being re-formed after its near destruction on the Eastern Front, was immediately disarmed, while in the Salerno area the [[222nd Coastal Division (Italy)|222nd Coastal Division]] was attacked and dispersed by the 16th Panzer Division, and its commander, General [[Ferrante Vincenzo Gonzaga]], was killed after refusing to surrender.
 
The [[7th Army (Italy)|7th Italian Army]] of General [[Mario Arisio]] was stationed in Calabria, [[Basilicata]] and Abulia; German forces in these regions were scarce, and were being moved north. On 9 September the 7th Army headquarters in [[Potenza]] were attacked by surprise and captured by the German troops, but the overall weakness of the German forces and the swift intervention of the Allied forces helped the Italian units, the majority of whom mantained cohesion. The 9th Corps (General Roberto Lerici) held central and northern Abulia despite the collapse of the [[209th Coastal Division (Italy)|209th Coastal Division]]; General [[Nicola Bellomo]] held the harbour of Bari till the arrival of the Allied forces, while more south the 51st Corps of General De Stefani held its positions between [[Grottaglie]] and [[Lecce]] with the [[58th Infantry Division Legnano]], the [[152nd Infantry Division Piceno]] and the [[210th Coastal Division (Italy)|210th Coastal Division]]. The situation of the 31st Corps (General Mercalli), stationed in Calabria with three coastal divisions and the [[104th Motorised Division Mantova]], was in a more difficult situation: it was attacked by the 76th Panzerkorps and sustained casualties, and part of the 185th Parachutist Regiment decided to remain loyal to the previous alliance with Germany and joined the 1st German Prachutist Division.
 
General [[Frido von Senger und Etterlin]], German commander in Sardinia, was ordered by Kesselring to whitdraw to [[Corsica]] with the 90th Panzergrenadier Division. This manoeuvre was a complete success; the Italian forces present in the area (consisting in the [[184th Airborne Division Nembo]], the [[31st Infantry Division Calabria]], the [[30th Infantry Division Sabauda]], the [[47th Infantry Division Bari]], the [[203rd Coastal Division (Italy)|203rd Coastal Division]], the [[204th Coastal Division (Italy)|204th Coastal Division]] and the [[205th Coastal Division (Italy)|205th Coastal Division]]), under General Antonio Basso, lacked mobility and did not go into action till 12 September; due to previous agreements taken with the German commands, they did not impede the transfer of the German forces to Corsica, which was completed by 18 September with a few wounded caused by a skirmish near Oristano.
A battalion of the Nembo Division, which had reacted negatively to the news of the armistice, mutinied, killed the Divisional chief of staff, Colonel Alberto Bechi Lucerna, and joined the 90th Panzergrenadier Division.
 
In Corsica, after initial confusion and fruitless negotiations, General Giovanni Magli, commander of the 7th Corps ([[20th Infantry Division Friuli]] and [[44th Infantry Division Cremona]]), attacked the Waffen-SS "Reichführer-SS" brigade, while some French units landed at [[Ajaccio]] on 12 September. On 13 September, following the arrival of the 90th Panzergrenadier Division from Sardinia, [[Bastia]] (where [[Action off Bastia|a previous German attempt to capture the port and Italian shipping had been thwarted by Italian ships]]) fell in German hands, but the Wehrmacht Supreme Command ordered General Von Senger to leave the island and whitdraw to [[Piombino]]. The German forces were evacuated from Corsica by 4 October, despite attacks by the Italian and French forces (the latter consisting in the 4th Moroccan Mountain Division).
 
On 12 September a paratrooper units under Major [[Harald-Otto Mors]], which also included the SS officer Otto Skorzeny (who had located the different prisons where Mussolini had been held), carried out Operation “Eiche” and thus freed Mussolini from detention in Campo Imperatore, [[Gran Sasso]]; this was an essential premise for the creation of a new Fascist collaborationist government wanted by Hitler.
 
=== Disintegration of Italian forces in Central and Northern Italy ===
 
The strategic situaton in Central and Northern Italy was much more favourable to the German forces than it was in Southern Italy. Army Group B under Field Marshal Rommel had a considerable number of troops, was far away from possible Allied intervention, and its units were deployed so as to be ready to intervene against Italian units, which were much less prepared and lacked clear orders. Moreover, the behaviour of many of the Italian commanders further favoured the success of the “Achse” plan: the local Italian superior commands, mostly concerned with avoiding riots, devastations and popular insurrections, refused the help of civilians in the resistance, sometimes autonomously dissolved their units, and started negotiations with the Germans for an uneventful handover. Even the civilian leadership of the major cities carried out the instruction of the chief of police Carmine Senise, mostly aimed at avoiding riots, and thus contacted the German authorities and collaborated with them. Acting in such circumstances, Rommel carried out his task with speed and efficience, while many Italian units quickly disintegrated and offered little resistance; Army Group B strictly carried out the orders about the internment of Italian troops, and by 20 September 183,300 of the 13,000 officers and 402,000 soldiers captured had already been sent to Germany.
 
German units in [[Piedmont]] quickly neutralized the Italian units; in [[Turin]] (where General Enrico Adami Rossi refused to arm the civilians – on 18 August he had ordered to fire on the crowd during a popular demonstration – and immediately started negotiations) and [[Novara]] (where General Casentino surrendered his entire command) the high commands did not try any resistance, immediately handed over their weapons and surrendered with their disintegrating units; Adami Rossi surrendered as soon as German armoured units entered Turin (he later joined the Italian Social Republic).
In [[Ligury]], by 11 September the German troops of the 87th Corps (76th and 94th Infantry Division) and of the 51st Corps (65th and 305th Infantry Division) occupied all positions, while the 16th Italian Corps ([[105th Infantry Division Rovigo]] and [[6th Alpine Division Alpi Graie]]) dissolved; German units also entered the naval base of [[La Spezia]], but the Italian fleet had already sailed, while ships unable to sail had been scuttled or sabotaged.
 
In [[Milan]] General Vittorio Ruggero, commander of the garrison, bought time for 48 hours and then reached an agreement with a German colonel of the 1st SS Panzer Division "Leibstandarte Adolf Hitler"; Ruggero dissolved without a fight the [[5th Infantry Division Cosseria]], which was being re-formed after the heavy losses suffered in [[Russia]], and already on the following day the Waffen-SS units broke the agreement, occupied Milan and arrested Ruggero, who was sent to POW camps in Germany along with his soldiers. After a brief resistance also the garrison of [[Verona]] and his commander, General Guglielmo Orengo, were disarmed and deported by the German forces.
 
Despite the [[Alpine Wall]] fortifications, Italian units quickly disintegrated also in [[Trentino]]-[[South Tyrol]]: by 9 September the two alpine divisions of the 35th Corps of General Alessandro Gloria ([[2nd Alpine Division Tridentina]] and [[4th Alpine Division Cuneense]], but under re-constituion after their destruction on the Estern Front) were immediately attacked and disarmed by the 44th German Infantry Division, which was already deployed south of Brenner Pass, and by the “Doelha” Brigade; only in [[Rovereto]] did some units make resistance till the morning of 10 September, before to surrender. In [[Emilia]], the 2nd SS-Panzerkorps of General Paul Hausser occupied the territory and destroyed the weak Italian units in the area without difficulty: the 24th Panzer Division and "Leibstandarte Adolf Hitler" quickly entered [[Modena]] and [[Bologna]]; the [[3rd Cavalry Division Principe Amedeo Duca d’Aosta]], which was being re-formed after the losses suffered in Russia, was disarmed, and the soldiers taken prisoner.
 
The 71th German Infantry Division encountered more difficulty in occupying [[Friuli]] and the [[Julian March]]; whereas the [[3rd Alpine Division Julia]] and the [[2nd Infantry Division Sforzesca]], both being re-formed after their destruction in Russia, were soon disarmed, the [[52nd Infantry Division Torino]] made resistance in [[Gorizia]], where workers formed the first partisan groups. Meanwhile, Slovene partisan formations invaded part of this region, where they often committed bloody revenges against the Italian civilian population. Only towards the end of the month the 71th German Infantry Division, assisted by Italian collaborationist soldiers of the Italian Social Republic, regained control of the situation, repelled the Yugoslav partisans and occupied all the territory. In [[Trieste]] General Alberto Ferrero, after fruitless talsk with anti-fascist representatives, started negotiations with the Germans and then abandoned the city, and 90,000 Italian soldiers in the area, abandoned without orders, surrendered without a fight.
 
In Central Italy, north of Rome, the 5th Italian Army of General [[Mario Caracciolo di Feroleto]], headquartered in [[Orte]], was dissolved on 11 September, and its soldiers were disarmed and interned; the [[3rd Infantry Division Ravenna]], headquartered in [[Grosseto]], and the coastal formations of the Northern Thyrrenian Sea disintegrated, and German units entered in the cities; [[Livorno]] was captured on 10 September. In [[Florence]], General Chiappa Armellini immediately allowed the Germans to enter the city; Colonel Chiari in [[Arezzo]] and Colonel Laurei in [[Massa]] gave up their forces without attempting any resistance. Italian units and civilian volunteers in Piombino repelled a German landing attempt between 10 and 11 September, killing or capturing some hundreds of German soldiers, but on 12 September the Italian superior commands surrendered the town to the Germans.
 
Army Group B completed its task by 19 September, occupying all Central and Northern Italy, disarmino and capturing great part of the Italian troops and capturing a sizeable booty that included 236 armoured fighting vehicles, 1,138 [[field gun]]s, 536 [[anti-tank gun]]s, 797 [[anti-aircraft gun]]s, 5,926 [[machine gun]]s and 386,000 rifles. Along with 13,000 officers and 402,000 Italian soldiers, 43,000 Allied prisoners, previously held in Italian captivity, were also captured. Rommel organized a quick transfer to Germany of the captured Italian soldiers, which were sent through Brenner Pass, partly by train, partly on foot.
 
== Disintegration of Italian forces abroad ==
=== France ===
The [[4th Army (Italy)|4th Italian Army]] of General [[Mario Vercellino]], consisting of the [[5th Alpine Division Punteria]], the [[2nd Cavalry Division Emanuele Filiberto Testa di Ferro]] and the [[48th Infantry Division Taro]], was on its way from [[Provence]] to Italy when news of the armistice came; panic immediately spread among the troops, and rumors about the aggressiveness and brutality of the German troops caused demoralization and disintegration of the units towards the border. The army, dispersed between France, Piedmont and Ligury, disintegrated between 9 and 11 September, under the pressure of the converging German forces of Field Marshals [[Gerd von Rundstedt]] (from Provence) and Rommel (from Italy).
 
Taking advantage of the disgregation of the Italian units, the German troops swiftly captured all positions: the 356th and 715th Infantry Division entered [[Toulon]] and reached the [[Varo]] river, while the Panzergrenadier Division ''Feldherrnhalle'' occupied the riviera till [[Menton]]. [[Mont Cenis]] pass, held by Italian units, was attacked in a [[pincer movement]] by German units from France (units of the 157th and 715th Infantry Division) and Piedmont (units of the ''Leibstandarte Adolf Hitler'', coming from Turin); the Italian garrison defended the pass for some time, then surrendered after blowing up part of the [[ Fréjus Rail Tunnel]].
Most soldiers of the 4th Army dispersed and tried to reach their homes; some others decided to remain with the Germans, whereas sizeable groups chose to oppose the occupation and went on the mountains, where they joined groups of anti-fascist civilians and thus formed the first partisan groups in Piedmont. On 12 September, General Vercellino formally dissolved his Army, while General Operti secured the Army treasure, part of which would later be used to fund the resistance.
 
=== Balkans ===
 
Italian forces in the [[Balkans]] ([[Slovenia]], [[Dalmatia]], [[Croatia]], [[Bosnia]], [[Herzegovina]], [[Montenegro]], [[Albania]] and [[Greece]]) amounted to over 30 divisions and 500,000 soldiers, whom had been engaged for two years in wearing counter[[guerrilla]] operations against Yugoslav and Greek partisans. Italian forces in the area consisted of the [[2nd Army (Italy)|2nd Army]] (General [[Mario Robotti]]) in Slovenia and Dalmatia, of the [[9th Army (Italy)|9th Army]] (General [[Lorenzo Dalmazzo), stationed in Albania and under the control of Army Group East of General [[Ezio Rosi]] (which walso included the troops in Bosnia and Montenegro), and of the [[11th Army (Italy)|11th Army]] (General Vecchierelli) in Greece, the latter under [[Army Group E]] of General [[Alexander Löhr]].
 
Italian troops in the area were exhausted after years of wearing anti-partisan operations, characterized by brutalities, reprisals and repression, and were isolated in a hostile territory, mixed with numerous German divisions (over 20 divisions of Army Group F of Field Marshal Von Weichs, and of Army Group E of General Löhr) and Croat collaborationist units whom, on 9 September, immediately severed all ties with Italy and joined Germany in the fight against the former ally. Without any land connection, and with confuse and vague orders, units quickly disintegrated and many soldiers were disarmed, captured and deported to Germany. However Italian soldiers in this area fought with more determination than the units left in Italy, suffering heavy casualties and harsh reprisals by the German units.
 
Some units managed to escape capture and joined Yugoslav or Greek partisan formations, subsequently fighting alongside them; the population was often friendly towards the soldiers, and helped them. German forces, less numerous but more mobile, determined and well-led, and enjoying complete [[air supremacy]], quickly prevailed, brutally crushing Italian resistance, often summarily executing Italian officers, and occupying all the Balkan region; 393,000 Italian soldiers were captured and deported, about 29,000 joined the Germans, 20,000 joined Partisan formations, and 57,000 dispersed or hid and tried to survive.
 
The 5th, 11th and 18th Corps which formed the 2nd Army, stationed in Slovenia, Croatia and Dalmatia, were attacked by two Croat and three German divisions; General [[Gastone Gambara]], commander of the 11th Corps, started negotiations in [[Fiume]] and then abandoned his troops on 14 September, leaving them to be captured; [[Pola]] also fell without resistance. On 11 September the divisions stationed in Dalmatia were orderd to avoid any resistance in the hope of a peaceful repatriation, but the subordinate units refused, and started fighting against the Germans. The [[14th Infantry Division Isonzo]], [[22nd Infantry Division Cacciatori delle Alpi]] and [[153rd Infantry Division Macerata]] were dissolved, whereas the [[57th Infantry Division Lombardia]] and the [[154th Infantry Division Murge]] resisted in [[Susak]] and [[Karlovac]]; the [[158th Infantry Division Zara]] surrendered on 10 September and its commanders were deported, while in [[Split]] the [[15th Infantry Division Bergamo]] made an agreement with Yugoslav partisans and defended the town till 27 September against the [[7th SS Volunteer Mountain Division Prinz Eugen]], sent from [[Mostar]]; after surrender, three Italian generals (Alfonso Cigala Fulgosi, Raffaele Pelligra and Angelo Policardi) and 46 officers were executed. The [[1st Cavalry Division Eugenio di Savoia]], stationed in Dalmatia, was dispersed.
 
Italian forces in [[Albania]] consisted of the six divisions of the 9th Army (General Dalmazzo); the headquarters of Army Group East (General Rosi) was in [[Tirana]]. Left without clear orders, Italian commanders showed undecision and insufficient fighting spirit; on the contrary, German forces (Superior Command "Kroazia" with two chasseurs divisions, one mountain division and the 1st Panzer Division) acted swiftly and with great aggressiveness. In the morning of 11 September, the command of Army Group East was surrounded and General Rosi was immediately captured along with his officers, while General Dalmazzo did not react to the German attacks, did not issue any order of resistance and started negotiations with the Germans, hastening the disintegration of his forces.
 
The [[11th Infantry Division Brennero]] (whose commander, General Princivalle, kept an ambivalent behaviour), [[38th Infantry Division Puglie]], [[49th Infantry Division Parma]] and [[53rd Infantry Division Arezzo]] handed over their weapons and were dissolved (most men of the Brennero Division however managed to return to Italy by sea, while a considerable part of the men of the Arezzo Division escaped and joined the partisans), while the [[41st Infantry Division Firenze]] (General [[Arnaldo Azzi]]) and the [[151st Infantry Division Perugia]] (General Ernesto Chiminello) tried to resist. The Firenze Division faced the Germans in battle but was defeated near [[Kruja]], after which the Division was dissolved and its men joined the partisan formations; the Perugia Division retreated to [[Porto Edda]] after a [[fighting retreat]] and some of its men managed to embark on ships headed for Italy, but most of the division, weakened by the exhausting march through the Albanian mountains and the continuous attacks, was surrounded and surrendered on 22 September, after which General Chiminello and 130 officers were executed. Some survivors joined the partisans, forming the [[Antonio Gramsci Battalion]].
Over 15,000 dispersed Italian soldiers were sheltered by the population; the 21st German Mountain Corps established its headquarters in Tirana already on 10 September.
 
In Bosnia and Herzegovina, the [[18th Infantry Division Messina]] resisted for four days, while the [[32nd Infantry Division Marche]] tried to defend [[Dubrovnik]], but the German forces crushed its resistance; the commander of the Division, General Giuseppe Amico, was captured by the Germans during a parley and released to convince his men to surrender, but he instead rallied them against the Germans. Recaptured later, he was executed. In Montenegro, the [[23rd Infantry Division Ferrara]] disintegated, while the [[155th Infantry Division Emilia]] defended the [[Bay of Kotor]] till 16 September, then it had to surrender; the soldiers of the [[19th Infantry Division Venezia]] and of the [[1st Alpine Division Taurinense]] joined Tito’s partisans and formed the “Garibaldi” partisan Division, which kept fighting agains the Germans, despite some violent “incomprehensions” with the Yugoslavs, till March 1945.
 
In mainland [[Greece]], as elsewhere, uncertainty and ambivalent behaviour of the Italian superior officers favoured a rapid German success; Italian forces in this region, consisting of the [[11th Army (Italy)|11th Army]] with headquarters in [[Athens]], were subordinate to Army Group E of General Löhr, whom had numerically inferior but more efficient units (three chasseurs divisions, part of the 1st Panzer Division and a Luftwaffe field division). General [[Carlo Vecchierelli]], commander of the 11th Army, issued at first an order ditctating that no initiatives where to be taken against the Germans, and on 9 September, believing the German assurances of [[safe-conduct]]s to return to Italy, he ordered his troops to avoid any resistance and hand over the weapons to the Germans, without fighting.
 
The consequence was the disintegration of most of the units: the [[29th Infantry Division Piedmont]], [[36th Infantry Division Forlì]], [[37th Infantry Division Modena]], [[56th Infantry Division Casale]] and [[59th Infantry Division Cagliari]] were easily disarmed and their soldiers were captured and sent to Germany. The [[24th Infantry Division Pinerolo]], stationed in [[Thessalia]], rejected Vecchiarelli’s orders; General Adolfo Infante, after fighting in [[Larissa]], retreated to the [[Pindus]] massif, where he tried to obtain collaboration of the [[ELAS]] partisans. At first the Greek partisans agreed, but then they attacked the Italians to capture their weapons; Infante left for Italy, and his men partly dispersed among the local population, partly were imprisoned.
 
=== Ionian Islands and the Dodecanese ===
{{vedi anche|Dodecanese Campaign|Cefalonia massacre}}
 
German commands believed that it would be of great importance to retain conrol of the [[Ionian Islands]] and the [[Dodecanese]], garrisoned by Italian troops, as they were believed to be of great strategic importance as a peripheric naval and air base and a defensive stronghold against possible Allied attacks on the Balkan front. Therefore, German forces launched a series of operations aimed at capturing the most important of these islands, with a sizeable concentration of land and air forces. These operations caused some bloody battles against the Italian garrisons (who tried to resist, relying on their numerical superiority, geographical isolation and in some cases Allied assistance) and atrocities after surrender.
 
The Allied commands, despite insistence from [[Winston Churchill]] who supported a powerful Allied intervention in these islands to support the Italian garrisons and to secure valuable naval and air bases (which would turn useful for attacks on the southern Balkan front of “Fortress Europe”), only sent weak contingents with scarce air support, and were thus unable to change the course of the events, which progressively turned in favour of the Wehrmacht.
 
In [[Crete]], the [[51st Infantry Division Siena]] was immediately neutralized and disarmed by the German forces in the island (the “Kreta” fortress brigade and the [[22nd Air Landing Division (Wehrmacht)|22nd Air Landing Division]], a veteran of the [[German invasion of the Netherlands]] and of the [[Siege of Sebastopol]]); part of the Italian soldiers joined the Germans, whereas most of them were imprisoned and transferred to mainland Greece by sea, but at least 4,700 of them drowned in the sinking of two of the ships that were carrying them ([[MS Sinfra|Sinfra]] and [[SS Petrella|Petrella]]). [[Rhodes]] also quickly fell to the Germans; Italian forces there (the [[50th Infantry Division Regina]] and part of the [[6th Infantry Division Cuneo]], with 34,000 men), enjoyed numerical superiority over the German forces of General Kleeman (7,000 men of the “Rhodos” Division), but after [[Battle of Rhodes (1943)|an undecisive battle]] the Italian commander, Admiral [[Inigo Campioni]], surrendered when the Germans threatened to launch heavy bombings against the town of Rhodes. [[Karpathos]] was occupied by German forces on 13 September, after Campioni had ordered the island garrison to surrender. Over 6,500 Italian soldiers of the Rhodes garrison died after surrender, most of them in the sinking of the steamers [[SS Oria (1920)|Oria]] and [[Italian ship Gaetano Donizetti|Donizetti]] that were carrying them to mainland Greece; Campioni was later executed by [[Italian Social Republic|Fascist authorities]] for having defended the island.
 
British units landed in [[Leros]] and [[Kos]], where they joined the Italian garrisons in contrasting the German invasion (carried out by the 22nd Air Landing Division), but mediocre coordination, better German efficency and German air supremacy led to a German victory and the capture of both islands. [[Battle of Kos|Kos fell on 4 October]], with 2,500 Italian and 600 British soldiers taken prisoners; 96 Italian officers, including the garrison commander (Colonel Felice Leggio), were executed. Leros, defended by its 7,600-strong Italian garrison reinforced by 4,500 British soldiers, [[Battle of Leros|resisted for much longer]]; after weeks of continuous bombing, on 12 November 2,700 German soldiers landed or were parachuted in different points of the island and, despite numerical inferiority, they prevailed by 16 September, forcing both Italians and British to surrender. The Italian commander, Rear Admiral [[Luigi Mascherpa]], was later executed by RSI authorities like Campioni.
 
The most tragic events took place in the Ionian Islands, namely [[Corfu]] and [[Cephalonia]], which the German command considered to be of utmost importance for defense of the Balkan coast against possible Allied landings. The Italian garrison, consisting in the [[33rd Mountain Infantry Division Acqui]] with 11,500 men under General [[Antonio Gandin]], at first did not take any initiative against the much smaller German garrison (2,000 mountain troops under Lieutenant Colonel Hans Barge), and waited for clear orders. On 11 September, the Germans presented an [[ultimatum]] which ordered the Italians to surrender; Gandin at first decided to hand over the weapons, but after signs of protest and unrest among his men, he decided to resist. On 14 September, after receiving clear oders from the superior commands in Brindisi, Gandin rejected the ultimatum and attacked the German forces.
 
On 15 September, the Germans intervened in forces, landing five battalions of mountain troops of the [[1st Mountain Division (Wehrmacht)|1st Mountain Division ''Edelweiss'']] of General [[Hubert Lanz]], supported by [[self-propelled gun]]s. The Germans repelled the Italian attack and then, after fierce fighting, went on the offensive on 21 September and forced the Italians to surrender at 11:00 on 22 September. After the surrender, the Germans began a bloody reprisal; General Gandin, about 400 officers and 4,000 to 5,000 men of the Acqui Division were executed. 1,300 men had previously been killed in the battle, and another 1,350 subsequently perished in the sinking of ships that were carrying them to mainland Greece.
In Corfu the 4,500-strong Italian garrison easily overpowered and captured the 500-strong German garrison; the German prisoners were transferred by sea to Italy (and their presence in Italian hands is probably the reason that prevented the Germans from committing another full-scale massacre like in Cephalonia), while the garrison was reinforced by 3,500 more men. Between 24 and 25 September, however, more German forces, with Luftwaffe support, landed in the island, and on 26 September the Italians, after losing some hundreds of men and running out of ammunition, surrendered. The Italian commander, Colonel Luigi Lusignani, was executed along with 28 of his officers; 1,302 Italian prisoners perished in the sinking of the [[Italian ship Mario Roselli|motorship Mario Roselli]] which was to transfer them to the mainland.