Key events, figures, and domestic impact of the Vietnam War and its era. Front: the term, event, or figure. Back: a one to two sentence explanation of its significance.
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- Gulf of Tonkin Incident
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Disputed naval events in August 1964 involving alleged North Vietnamese attacks on US destroyers that prompted Congress to pass the Gulf of Tonkin Resolution, greatly expanding presidential war powers.- Domino Theory
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Cold War belief that if one country fell to communism, neighboring countries would follow like dominoes, justifying US intervention in Vietnam to prevent regional communist expansion.- Operation Rolling Thunder
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Sustained bombing campaign against North Vietnam from 1965 to 1968 intended to weaken North Vietnam's military capacity and destroy its will to fight.- Tet Offensive
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Major coordinated North Vietnamese and Viet Cong attack in January 1968 on South Vietnamese cities that, though militarily defeated, shocked Americans and turned public opinion decisively against the war.- Lyndon B. Johnson
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US president from 1963 to 1969 who dramatically escalated American military involvement in Vietnam through Operation Rolling Thunder and major troop deployments, and chose not to seek reelection in 1968.- Ho Chi Minh
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Communist leader of North Vietnam and nationalist figure who defeated French colonial forces and unified Vietnam under communist rule after the war ended in 1975.- Pentagon Papers
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Classified Defense Department study leaked to the press in 1971 revealing that successive US administrations had systematically misled the public about Vietnam War progress and prospects.- My Lai Massacre
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March 1968 incident where US troops killed hundreds of unarmed South Vietnamese civilians, shocking the American public and raising serious questions about war crimes and military conduct.- Fall of Saigon
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April 1975 collapse of the South Vietnamese government when North Vietnamese forces entered the capital, ending the war and reunifying the country under communist control.- Richard Nixon
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US president from 1969 to 1974 who campaigned on peace and implemented Vietnamization (gradual US troop withdrawal), while also secretly expanding the war into Cambodia and Laos.- Walter Cronkite
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Trusted CBS Evening News anchor whose February 1968 broadcast declaring the Vietnam War unwinnable significantly influenced American public and political opinion against further escalation.- Anti-war Movement
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Massive domestic protests by students, veterans, and activists opposing US involvement in Vietnam, including marches, teach-ins, and draft card burning that dominated American politics.- Kent State Shootings
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May 1970 incident where Ohio National Guard fired on student protesters against the invasion of Cambodia, killing four students and galvanizing anti-war sentiment nationwide.- War Powers Act
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1973 law requiring the president to notify Congress within 48 hours of military action and limiting military engagement to 60 days without explicit congressional approval.- Vietnamization
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Nixon administration strategy to gradually withdraw American troops while training and equipping South Vietnamese forces to fight their own war against North Vietnam.
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