World War II background By Cferrari Jan 30, 1933 Hitler becomes chancellor of Germany Sep 15, 1935 General Tojo assumes command in Manchuria Dec 15, 1935 Italy invades Ethiopia Dec 19, 1937 Japan seizes Nanking Oct 21, 1938 Germany takes control of Sudetenland Mar 15, 1939 Nazi invasion of Czechoslovakia Hitler got what he wanted from the Munich conference and six months later moved troops from the Sudetenland into eastern Czechoslovakia. Sep 1, 1939 Invasion of Poland, start of WWII Mar 15, 1940 Nazi conquest of Scandinavia & the Low Countries Jun 15, 1940 France surrenders to Nazi Germany Jul 15, 1940 Battle of Britain Mar 15, 1941 Lend-Lease Act begins Jun 15, 1941 Germany violates treaty, invades USSR Jul 15, 1941 Japan invades French Indochina Dec 7, 1941 Pearl Harbor