World War II Timeline By Nagi Saleh By nagi Jun 29, 1921 Adolf Hitler became leader of the NSDP and took the title der Führer. Jan 30, 1933 Hitler appointed Chancellor of Germany by President Hindenburg. Apr 26, 1933 The Gestapo, Nazi secret police, were formed. Apr 27, 1933 The Nazis took over local government. May 2, 1933 Trade Unions were banned Jul 14, 1933 All political parties except the Nazis were banned.