WW2 Timeline By RamiMA24 Sep 1, 1939 Start of the War in the European Theater Mar 11, 1941 Lend/Lease Act Passed Dec 7, 1941 Pearl Harbor Dec 8, 1941 Start of the War in the Pacific Theater Dec 11, 1941 U.S. Joins the War Jun 6, 1944 D-Day Period: Feb 4, 1945 to Feb 11, 1945 Yalta Conference Apr 12, 1945 Death of Roosevelt May 8, 1945 Victory in Europe Day (V-E Day) Aug 6, 1945 Nagasaki Aug 6, 1945 Hiroshima Sep 2, 1945 Victory over Japan Day (V-J Day) Oct 24, 1945 Creation of the United Nations