WWII By dylancota1 Jan 1, 1936 Hitler gains power Adolf Hitler gains power as leader of Germany, forms Nazi army Period: Jan 20, 1936 to Aug 23, 1945 World War 2 Mar 1, 1938 Hitler invades austria Adolf hitler wanted to expand his nation, so he started to invade neighboring countries. Jun 6, 1944 D-Day D-Day description video