World War 2 Timeline During the nearly six years that World War 2 raged, approximately 61 million individuals (miliary and civilian) lost their lives. Russia suffered more than any other nation, with nearly 25 million deaths, followed by China with 11 million and Germany with 7 million. The United States entered World War 2 after Japan bombed Pearl Harbor on December 7, 1941. During the next four years, the U.S. lost 295,000 soldiers in death, and had a total of 405,399 American casualties (including wounded). …showed first 75 words of 1018 total…

…showed last 75 words of 1018 total…ly 1945 Potsdam Conference in Potsdam, Germany. August 6, 1945 First atomic bomb dropped on Hiroshima. President Truman broadcasts address to the nation from the SS Augusta. August 8, 1945 U.S.S.R. declares war on Japan. August 9, 1945 Atomic bomb dropped on Nagasaki. August 14, 1945 President Truman announces that hostilities between U.S. and Japan have ended. September 2, 1945 Japanese delegation signs surrender documents aboard the battleship Missouri. President Truman declares V-J (Victory over Japan) day. October 4, 1945 Military occupation of Japan.