Multiple choice Why did the Allies invade Italy when it already surrendered to its forces? The Allies wished to punish Italy. The people of Italy were still fighting the Allies. There was a resistance movement of Italian troops in Naples. German forces were still in Italy fighting. Reveal answer Fill a bubble to check yourself D Correct answer Explanation Although the Italian government signed an armistice with the Allies in September 1943, German forces occupied much of the country and continued to fight the Allied advance northward.