The Vietnam War By nakia clyde Apr 30, 1955 Ngo Dinh Diem became president of South Vietnamese Apr 30, 1964 The United States opposition in the war. Aug 18, 1965 Operation Starlite made a major american ground battle. Aug 16, 1966 the House Un-American Activities Committee began investigations of Americans. Feb 13, 1971 South vietnamese troops invaded Laos . Apr 30, 1972 The War ended Apr 30, 1972 the war cause a major isse in the united states May 1, 1973 the war power act curtailed the president Jun 27, 1973 US ended involvement in vietnam. Jul 10, 1975 The North invaded the South and took control. Jul 2, 1976 Saigon was re-named Ho Chi Minh Jan 21, 1977 Jimmy Carter pardoned in the Vietnam War