The Vietnam War, also known as the Second Indochina War, was a Cold War military conflict that which may be said to have occurred in Vietnam, Laos, and Cambodia from September 26, 1959 to April 30, 1975. The war was fought between the communist North Vietnam, supported by its communist allies, and the government of South Vietnam, supported by
the United States and other anti-communist nations. The Viet Cong, a lightly armed South Vietnamese communist-controlled common front, largely fought a guerrilla war against anti-communist forces in the region. The North Vietnamese Army engaged in a more conventional war, at times committing large units into battle. U.S. and South Vietnamese forces relied on air superiority and overwhelming firepower to conduct search and destroy operations, involving ground forces, artillery and airstrikes. The United States entered the war to prevent a communist takeover of South Vietnam as part of their wider strategy of containment. Military advisors arrived beginning in 1950. U.S. involvement escalated in the early 1960s, with U.S. troop levels tripling in 1961 and tripling again in 1962. U.S. combat units were deployed beginning in 1965. Involvement