U.S. Involvement in the Pacific Theatre - WWII By sarmistead1@cox.net Dec 7, 1941 Japan attacks Pearl Harbor Dec 8, 1941 U.S. and Great Britain declare war on Japan Feb 22, 1942 President Roosevelt orders General MacArthur out of the Phillipines Apr 18, 1942 Doolittle Raid on Tokyo Jun 4, 1942 Battle of Midway Island Nov 12, 1942 Naval Battles at Guadalcanal begin Jul 5, 1943 Americans land in the Solomon Islands Jun 15, 1944 Americans land on Saipan Feb 19, 1945 Battle of Iwo Jima begins Apr 1, 1945 U.S. invades Okinawa Aug 6, 1945 Atomic Bomb dropped on Hiroshima Aug 9, 1945 Atomic Bomb dropped on Nagasaki Aug 15, 1945 Japan surrenders