Adolf Hitler's role was to be the leader of the Nazi Party.
Adolf Hitler was the chancellor of Germany from 1933 to 1945
Hitler's invasion of Poland in 1939. The war continued for six dangerous years until the finished Allied defeat of both Nazi Germany and Japan in 1945.
Hitler rose to power in the National Socialist German Workers Party, taking control of the German government in 1933.
Hitler had no intention of letting the Russians capture him.