He used fear and intimidation, particularly the Brownshirts, to consolidate and maintain power. He established the SS, the Gestapo, and Concentration Camps, where Jews and those opposed to Hitler were sent.
Hitler began the war in Europe in 1939 when German forces invaded Poland in a blitzkrieg attack. He then invaded France and his neighbors to the North, but failed to subdue Great Britain, who defeated the Germans in the Battle of Britain. In 1941 he invaded the Soviet Union (Operation Barbarossa) and pushed all the way to Moscow before the Russians were able to stop him.
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