The Massacre of the Acqui Division, also known as the Cephalonia massacre, was a war crime by German soldiers against POWs of the Italian 33rd Infantry Division "Acqui" on the island of Cephalonia, Greece, in September 1943, following the Italian armistice during the Second World War. About 5,000 soldiers were executed, and around 3,000 more drowned.
Following the decision of the Italian government to negotiate a surrender to the Allies in 1943, the German Army tried to disarm the Italians during Operation Achse. On 13 September the Italians of the Acqui resisted, and fought the Germans on the island of Cephalonia. By 22 September the last of the Italian resistance surrendered after running out of ammunition. A total of 1,315 Italians were killed in the battle, 5,155 were executed by 26 September, and 3,000 drowned when the German ships taking the survivors to concentration camps were sunk by the Allies. It was one of the largest prisoner of war massacres of the war, along with the Katyn massacre, and it was one of many atrocities committed by the 1st Mountain Division ().
History
Background
Since the fall of Greece in April–May 1941, the country had been divided in occupation zones, with the Italians getting the bulk of the mainland and most islands. The Acqui Division had been the Italian garrison of Cephalonia since May 1943, and consisted of 11,500 soldiers and 525 officers. It was composed of two infantry regiments (the 17th and the 317th), the 33rd artillery regiment, the 27th Blackshirt Legion with the XIX Blackshirt Battalion and support units. Furthermore, its 18th Regiment was detached to garrison duties in Corfu. The Acqui also had naval coastal batteries, torpedo boats and two aircraft. From 18 June 1943, it was commanded by the 52-year-old General Antonio Gandin, a decorated veteran of the Russian Front where he earned the German Iron Cross.
The Germans decided to reinforce their presence throughout the Balkans, following Allied successes and the possibility that Italy might seek accommodation with the Allies. On 5–6 July Lt Colonel Johannes Barge arrived with 2,000 men of the 966th Fortress Grenadier Regiment, including Fortress-Battalions 810 and 909 and a battery of self-propelled guns and nine tanks.
After Italy's armistice with the Allies in September 1943, General Gandin found himself in a dilemma: one option was surrendering to the Germans – who were already prepared for the eventuality and had begun disarming Italian garrisons elsewhere – or trying to resist. Initially, Gandin requested instructions from his superiors and began negotiations with Barge.
On 8 September 1943, the day the armistice was made public, General Carlo Vecchiarelli, commander of the 170,000-strong Italian army occupying Greece, telegrammed Gandin his order, essentially a copy of General Ambrosio's promemoria 2 from Headquarters. Vecchiarelli's order instructed that if the Germans did not attack the Italians, the Italians should not attack the Germans. Ambrosio's order stated that the Italians should not "make common cause" with the Greek partisans or even the Allies, should they arrive in Cephalonia.
In the case of a German attack, Vecchiarelli's order was not very specific because it was based on General Pietro Badoglio's directive which stated that the Italians should respond with "maximum decision" to any threat from any side. The order implied that the Italians should defend themselves but did not explicitly state so. At 22:30 hours of the same day Gandin received an order directly from General Ambrosio to send most of his naval and merchant vessels to Brindisi immediately, as demanded by the terms of the armistice. Gandin complied, thus losing a possible means of escape.
To make matters even more complicated Badoglio had agreed, after the overthrow of Mussolini, to the unification of the two armies under German command, in order to appease the Germans. Therefore, technically, both Vecchiarelli and Gandin were under German command, even though Italy had implemented an armistice agreement with the Allies. That gave the Germans a sense of justification in treating any Italians disobeying their orders as mutineers or francs-tireurs, which, at that time, the laws of war considered unlawful combatants subject to execution on capture.