Which ally deserted Germany?

Answer 1

Italy However, the people of Italy had grown tired of fighting. The country could not produce enough food and equipment to support its troops. Part of this can be blamed on Hitler. When Italy made the "Pact of Steel" with Germany, Hitler promised to hold off starting any war for 3 years and to supply Italy with the resources they needed. Two weeks after making the alliance, Germany invaded Poland and began the war and Italy never recovered.