The Vietnam War officially began in 1954 with the signing of the Geneva Accords, which divided Vietnam into two separate states: North Vietnam and South Vietnam.

The Soviet Union was the primary supporter of North Vietnam, providing military and economic aid throughout the war.

Operation Ranch Hand was the name of the American military operation that involved the use of defoliants, such as Agent Orange, to destroy vegetation and crops in an attempt to deprive the Viet Cong of cover and food sources.

Lyndon B. Johnson was the U.S. President who authorized the escalation of American involvement in the Vietnam War, including the deployment of ground troops.

Operation Phoenix was the name of the North Vietnamese offensive that launched the Tet Offensive in 1968, which was a major turning point in the war.

The Paris Peace Accords were signed in 1973 and marked the end of the Vietnam War.

Richard Nixon was the U.S. President who withdrew American troops from Vietnam in 1973.

Operation Rolling Thunder was the name of the American military operation that involved the bombing of North Vietnam from 1965 to 1968.

Operation Phoenix was the name of the American military operation that involved the use of search-and-destroy missions to root out Viet Cong guerrillas.

The United States was the primary supporter of South Vietnam, providing military and economic aid throughout the war.

The Viet Cong was the name of the North Vietnamese military and political organization that led the fight against South Vietnam and the United States.

Operation Linebacker was the name of the American military operation that involved the mining of North Vietnamese harbors and waterways.

Operation Linebacker II was the name of the American military operation that involved the use of B-52 bombers to strike North Vietnamese targets.

The Hue Offensive was the name of the North Vietnamese military offensive that captured the city of Hue in 1968.

Operation Phoenix was the name of the American military operation that involved the use of helicopters to transport troops and supplies.