After the Allied invasion of Sicily, Italian forces signed an armistice with the Allied troops. The Germans were prepared for this possibility and launched Operation Achse to forcibly disarm Italian troops in southern France and the Balkans. The 1st Company of the 724th Battalion of Ludwiger's division was ordered to disarm the Italian garrison in Kefalonia along with the 1st Mountain Division, something that resulted in one of the largest executions of POWs to be committed during World War II: the massacre of the Acqui Division in September 1943.