Allies in Italy

Did you, like, just decide not to pay attention in class, and now you're shittin' and steppin' in the effort to catch up?

Look at a world map. See where the Suez Canal is. See where England is. Consider that Italy was an ally of Germany. Think about it.

Because before 1943, Italy had lost the war to a much weaker enemy,Greece.

It wasn't the Allies. It was England. Churchill was endeavoring to save the "empire" where the sun never set.

Marshall and Eisenhower couldn't give a rats ass about Italy. They knew Germany had to be defeated by an invasion of France and a campaign though Poland.
In the end Roosevelt acquiesced as the American army needed a jumping off point from England.