General Discussion

https://en.wikipedia.org/wiki/Vietnam_War

Following the Gulf of Tonkin incident in 1964, the US Congress passed a resolution that gave President Lyndon B. Johnson authority to increase military presence without declaring war. Johnson launched a bombing campaign of the north and sent combat troops, dramatically increasing deployment to 184,000 by 1966, and 536,000 by 1969. US forces relied on air supremacy and overwhelming firepower to conduct search and destroy operations in rural areas. In 1968, North Vietnam launched the Tet Offensive, which was a tactical defeat but convinced many Americans the war could not be won. Johnson's successor, Richard Nixon, began "Vietnamization" from 1969, which saw the conflict fought by an expanded ARVN while US forces withdrew. The 1970 Cambodian coup d'état resulted in a PAVN invasion and US–ARVN counter-invasion, escalating its civil war. US troops had mostly withdrawn from Vietnam by 1972, and the 1973 Paris Peace Accords saw the rest leave. The accords were subsequently violated by North Vietnam, and fighting continued until the 1975 spring offensive and fall of Saigon to the PAVN, marking the war's end. North and South Vietnam were reunified in 1976.