End of WWII to Exposure of My Lai By LeKevinH Sep 1, 1945 WWII Officially Ends; US and USSR are last remaining world superpowers Japan signs paperwork signifying their defeat. The United States of America and the Soviet Union are the last remaining world superpowers. Apr 7, 1954 Eisenhower reveals 'Domino Theory'; fear of communism is high in Cold War; US supports south Vietnam in war Jul 20, 1954 Geneva Conference officially divdes Vietnam into the Communist north and Democratic south at 17th parallel; Vietnam war starts Jan 1, 1960 Viet Cong are formed; Insurgency attacks in South increase Jan 1, 1963 Lyndon B. Johnson significantly increases US troops in Vietnam; US is now heavily involved in the war Jan 30, 1968 Tet Offensive is launched; US morale drops; Anti war sentiment increases in US Mar 16, 1968 Charlie Company slaughters 307 to 504 Vietnamese noncombatants at My Lai in the Quang Ngai Province Nov 12, 1969 Seymour M. Hersh breaks the My Lai massacre to the story after its cover-up for over a year