DSST Vietnam War study materials
DSST Vietnam War study resources

DSST Vietnam War key terms

DSST Vietnam War · Get comfortable with the vocabulary.

French Indochina

The colonial federation created in 1887 that grouped Vietnam, Cambodia, and Laos under French rule. It ended after the 1954 Geneva Accords and the collapse of French authority in Southeast Asia.

Related: First Indochina War, Geneva Accords of 1954
Nguyen Dynasty

Vietnam's last ruling dynasty, founded in 1802 with French help and lasting until 1945. Its emperors governed a unified Vietnam but progressively lost real power to French colonial administrators.

Related: Bao Dai, French Indochina
First Indochina War

The war fought from 1946 to 1954 between France and the Viet Minh. It ended with the French defeat at Dien Bien Phu and the partition of Vietnam at the Geneva Conference.

Related: Viet Minh, Battle of Dien Bien Phu, Geneva Accords of 1954
Viet Minh

The League for the Independence of Vietnam, a nationalist and communist front founded by Ho Chi Minh in 1941. It fought the French and later helped direct resistance in North Vietnam.

Related: Ho Chi Minh, First Indochina War, Viet Cong
Ho Chi Minh

Vietnamese communist revolutionary who led the independence movement and served as president of North Vietnam from 1945 to 1969. He symbolized the struggle for a unified, independent Vietnam.

Related: Viet Minh, Ho Chi Minh Trail, North Vietnam
Battle of Dien Bien Phu

A 1954 siege in which Viet Minh forces surrounded and defeated a French garrison in northwestern Vietnam. The loss forced France to negotiate and hastened the end of its Indochina empire.

Related: First Indochina War, Geneva Accords of 1954, Vo Nguyen Giap
Vo Nguyen Giap

North Vietnam's leading military commander, known for organizing the victory at Dien Bien Phu. He later directed People's Army of Vietnam strategy during the American war.

Related: Battle of Dien Bien Phu, People's Army of Vietnam, Tet Offensive
Geneva Accords of 1954

Agreements that ended the First Indochina War and temporarily divided Vietnam at the 17th parallel. They called for nationwide elections in 1956, which were never held.

Related: 17th parallel, Ngo Dinh Diem, First Indochina War
17th parallel

The line of latitude near which Vietnam was temporarily divided in 1954, separating North and South. It became a symbol of partition rather than a permanent political border.

Related: Geneva Accords of 1954, Demilitarized Zone, North Vietnam
Demilitarized Zone (DMZ)

The buffer strip along the 17th parallel between North and South Vietnam. It was intended to be free of military forces but became a heavily fortified and contested frontier.

Related: 17th parallel, Ho Chi Minh Trail
North Vietnam

The communist state formally called the Democratic Republic of Vietnam, based in Hanoi. It supported the insurgency in the South and received military and economic aid from China and the Soviet Union.

Related: Ho Chi Minh, Ho Chi Minh Trail, Viet Cong
South Vietnam

The anti-communist state formally called the Republic of Vietnam, based in Saigon. It was created after the 1954 partition and depended heavily on American political and military support.

Related: Ngo Dinh Diem, Army of the Republic of Vietnam, Geneva Accords of 1954
Ngo Dinh Diem

The first president of South Vietnam, installed in 1955 with American backing. His authoritarian, Catholic-dominated rule alienated many Buddhists and was ended by a coup in 1963.

Related: South Vietnam, Buddhist crisis, Strategic Hamlet Program
Bao Dai

The last emperor of Vietnam, who served as head of state of the Associated State of Vietnam. He was pushed aside in a 1955 referendum that confirmed Ngo Dinh Diem as leader.

Related: Ngo Dinh Diem, Nguyen Dynasty
Viet Cong

The communist guerrilla force in South Vietnam, formally the National Liberation Front's armed wing. It relied on infiltration, local recruitment, and support from North Vietnam.

Related: National Liberation Front, Ho Chi Minh Trail, Tet Offensive
National Liberation Front (NLF)

The political coalition founded in 1960 to oppose the South Vietnamese government. Often called the Viet Cong by opponents, it sought to unify Vietnam under communist leadership.

Related: Viet Cong, North Vietnam
Ho Chi Minh Trail

A network of supply routes running through Laos and Cambodia that moved troops and material from North to South Vietnam. It was heavily bombed but never fully cut.

Related: Ho Chi Minh, Viet Cong, Operation Rolling Thunder
Army of the Republic of Vietnam (ARVN)

South Vietnam's national army, trained and equipped largely by the United States. Its performance and leadership problems shaped debates over Americanization and Vietnamization.

Related: South Vietnam, Vietnamization
People's Army of Vietnam (PAVN)

North Vietnam's regular army, also known as the North Vietnamese Army. It supplied main-force units that increasingly fought alongside or in place of southern guerrillas.

Related: North Vietnam, Vo Nguyen Giap
Gulf of Tonkin incident

A reported clash between North Vietnamese torpedo boats and U.S. destroyers in August 1964. It prompted Congress to pass a resolution authorizing broader military action in Vietnam.

Related: Gulf of Tonkin Resolution, Lyndon B. Johnson
Gulf of Tonkin Resolution

A 1964 congressional measure that allowed the president to use military force in Southeast Asia without a formal declaration of war. It became the legal basis for large-scale U.S. involvement.

Related: Gulf of Tonkin incident, Lyndon B. Johnson
Lyndon B. Johnson

U.S. president from 1963 to 1969 who escalated American involvement in Vietnam. He pursued domestic Great Society reforms while facing growing antiwar opposition over the war.

Related: Gulf of Tonkin Resolution, Operation Rolling Thunder, Tet Offensive
Dwight D. Eisenhower

U.S. president from 1953 to 1961 who supported France in Indochina and then backed South Vietnam. He articulated the domino theory to justify containment in Southeast Asia.

Related: Domino theory, Ngo Dinh Diem
Domino theory

The belief that if one country fell to communism, neighboring countries would follow. It was a central justification for American intervention in Vietnam and elsewhere in Asia.

Related: Containment, Dwight D. Eisenhower
Containment

The U.S. Cold War policy of preventing the spread of communism beyond its existing borders. In Vietnam it translated into support for anti-communist governments and military intervention.

Related: Domino theory, Gulf of Tonkin Resolution
Dien Bien Phu

A remote valley in northwestern Vietnam where the decisive 1954 battle of the First Indochina War took place. Its fall undermined French resolve to continue fighting.

Related: Battle of Dien Bien Phu, First Indochina War
Viet Minh land reform

Radical redistribution of land in areas controlled by the Viet Minh during and after the First Indochina War. It built rural support but also provoked resistance and violence.

Related: Viet Minh, Ho Chi Minh
Strategic Hamlet Program

A South Vietnamese and American effort to relocate rural villagers into fortified settlements to isolate them from guerrillas. It often alienated peasants and produced mixed results.

Related: Ngo Dinh Diem, Viet Cong
Buddhist crisis

A period of protest in 1963 against religious discrimination by Ngo Dinh Diem's government. Self-immolations and crackdowns damaged his regime's legitimacy and preceded his overthrow.

Related: Ngo Dinh Diem, South Vietnam
Operation Rolling Thunder

A sustained U.S. bombing campaign against North Vietnam from 1965 to 1968. It aimed to pressure Hanoi but failed to stop infiltration or break North Vietnamese will.

Related: Ho Chi Minh Trail, Lyndon B. Johnson
Tet Offensive

A coordinated communist offensive across South Vietnam in early 1968. Though militarily costly for the attackers, it shattered American public confidence in the war effort.

Related: Viet Cong, Lyndon B. Johnson, Vo Nguyen Giap
Vietnamization

President Nixon's policy of shifting combat responsibility to South Vietnamese forces while withdrawing U.S. troops. It aimed to reduce American casualties and sustain the Saigon government.

Related: Army of the Republic of Vietnam (ARVN), Richard Nixon
Richard Nixon

U.S. president from 1969 to 1974 who pursued Vietnamization, expanded bombing, and negotiated the Paris Peace Accords. His administration ended direct U.S. combat involvement in 1973.

Related: Vietnamization, Paris Peace Accords
Paris Peace Accords

The 1973 agreement that formally ended direct U.S. military involvement in Vietnam. It left North Vietnamese troops in the South and did not produce a lasting political settlement.

Related: Richard Nixon, Vietnamization
Fall of Saigon

The capture of South Vietnam's capital by North Vietnamese forces in April 1975. It marked the end of the war and the reunification of Vietnam under communist rule.

Related: South Vietnam, North Vietnam
Gulf of Tonkin

The body of water off North Vietnam's coast where U.S. and North Vietnamese naval forces clashed in 1964. The episode led to expanded American military authority.

Related: Gulf of Tonkin incident, Gulf of Tonkin Resolution
Dien Bien Phu garrison

The French defensive position in the valley of Dien Bien Phu, supplied only by air. Its encirclement and surrender in 1954 ended French hopes of holding Indochina.

Related: Battle of Dien Bien Phu, French Indochina