WWII Timeline By kaylyn.busch Nov 11, 1918 WWI ends with German defeat. WWI ends with German defeat. Period: Nov 11, 1918 to Dec 14, 1939 WWI to WWII Apr 28, 1919 League of Nations founded League of nations founded Jun 28, 1919 Signing of Treaty of Versailles Jul 29, 1921 Hitler becomes leader of the (Nazi) party Sep 8, 1926 Germany admitted to League of Nations Oct 29, 1929 Stock market crashes Nov 8, 1932 Franklin Roosevelt elected President of the U.S Jan 30, 1933 Hitler becomes chancellor of Germany Oct 14, 1933 Germany quits League of Nations Aug 2, 1934 German president Hindenburg dies Aug 19, 1934 Hitler becomes Furer of Germany Mar 16, 1939 Nazi's take czechoslovakia Nov 8, 1939 Assasination attempt on Hitler fails