Joint warfare in South Vietnam, 1963–1969 the election of Richard Nixon, and the change of U.S. policy to Vietnamization, or giving the main combat role back to the South Vietnamese military. The North Vietnamese term for the large-scale introduction of U.S. ground forces, in 1965, is the "Local War", according to Gen. Trần Văn Trà, the [North Vietnamese] " Party concluded, the "United States was forced to introduce its own troops because it was losing the war. It had lost the political game in Vietnam...the situation allows us to shift our revolution to a new stage, that of decisive victory." The Party issued a resolution to
1971 in the Vietnam War 1971 in the Vietnam War U.S. military personnel in South Vietnam totaled 334,600 on 31 December 1970. The United States Congress adopted the revised Cooper-Church Amendment which prohibited the introduction of U.S. ground troops or advisers into Cambodia and declared that U.S. aid to Cambodia should not be considered a commitment to the defense of Cambodia. United States Secretary of Defense Melvin Laird said that the "Vietnamization" of the war was running ahead of schedule and that the combat mission of the U.S. troops would end in summer 1971. The last herbicide spraying by the United States to defoliate forests