Adolf Hitler, Austrian-born German politician, was a Nazi Party leader in 1921, 1933, was appointed German chancellor in 1934, the German head of state. During World War II, he serves the German armed forces supreme commander. He is recognized as the main instigators of World War II.
In pre-World War II, Germany and other Axis powers occupied most of Europe, North Africa, East Asia and the Pacific islands. However, after 1942, the Allies began to counterattack, the Germans gradually ranking disadvantage.