American intervention 1965 1966 1967 Tet Offensive and aftermath Vietnamization 1969–1971 1972 Post-Paris Peace Accords (1973–1974) Spring 1975 Air operations Naval operations Lists of allied operations This article is a list of known military operations of the Vietnam War in 1973 and 1974, conducted by the armed forces of the Republic of Vietnam, the Khmer Republic, the United States and their allies.