World War II Timeline By cmcd798 Sep 1, 1931 Seizure of Manchuria Feb 1, 1933 Japan withdrawls from League of Nations Oct 1, 1933 Hitler pulls Germany out of League of Nations Jan 1, 1934 Hitler begins building up Germany's army and weapons Jan 1, 1936 Hitler orders troops to Rhineland Dec 29, 1936 Germany makes alliances with Italy and Japan Jul 1, 1937 Japan continues to expand to China Mar 1, 1938 Hitler marches to Austria Mar 1, 1939 Hitler invades Sudetenland Sep 1, 1939 Hitler invades Poland Sep 3, 1939 Great Britain and France declare war on Germany Beginning of WWII in Europe Period: Jul 10, 1940 to Oct 31, 1940 Battle of Britain Germany defeated in air war Dec 7, 1941 Pearl Harbor Dec 8, 1941 US Declares war on Japan Jun 4, 1942 Battle of Midway Used Island Hopping Jun 6, 1944 D-Day Mar 21, 1945 Germany taken over Apr 30, 1945 Hitler commits suicide May 8, 1945 Germany Surrenders Jun 9, 1945 US Drops atomic bomb on Nagasaki Aug 6, 1945 Drop atomic bomb on Hiroshima