Vietnam War Trivia
0Loading crowd target
0Loading crowd target
7correct to beat the crowd
99 free Vietnam War trivia questions with answers — history quiz, new questions added Oct 2026.
50 free Vietnam War trivia questions with answers. The Vietnam War ran for two decades, spread into Laos and Cambodia, and reshaped American politics, journalism and music. This quiz walks through it in order: the French defeat at Dien Bien Phu and the split at the 17th parallel, the Gulf of Tonkin incident that opened the door to escalation, Rolling Thunder, Ia Drang and Khe Sanh, the shock of Tet, My Lai and Kent State, the Pentagon Papers, the Paris Peace Accords and the helicopters leaving Saigon. The easy questions ask who Ho Chi Minh was and what city Saigon became. The hard ones want the destroyer at Tonkin, the first date drawn in the 1969 draft lottery, the song that signalled the final evacuation, the name of the trail's Cambodian rival and who turned down the 1973 Nobel Peace Prize. Built for history students, veterans' families and anyone who wants the facts behind the films. Every answer was checked against Wikipedia's articles on the war and its major battles, operations and events, and each question carries the sentence that backs it up.
30 of 99 questions with answers and explanations. Play the quiz
Q 01Vietnam was divided at which line of latitude after the 1954 Geneva Conference?
The 17th parallel
The 17th parallel was meant to be a temporary line until nationwide elections in 1956, but the vote was never held and the truce line hardened into a border between two rival states.
Q 02Which 1954 battle ended French rule in Indochina?
Dien Bien Phu
Dien Bien Phu fell after a siege of nearly two months: the Viet Minh manhandled heavy artillery up the steep slopes around the valley and dug the guns in so well that French counter-fire could barely touch them.
Q 03Which Viet Minh general commanded the 1954 siege that defeated the French?
Võ Nguyên Giáp
Võ Nguyên Giáp was a history teacher with no formal military training; the self-taught general built a small guerrilla band into the army that beat France, then led it against the United States.
Q 04Who led South Vietnam from 1954 until his overthrow and death in a 1963 coup?
Ngo Dinh Diem
Ngo Dinh Diem was toppled and killed by his own generals in November 1963 after Washington signalled it would not stand in their way; President Kennedy was assassinated three weeks later.
Q 05South Vietnam's 1963 political crisis began when protesters in Hue were shot after defying a ban by flying what?
The Buddhist flag
The Buddhist flag was banned on the eve of a major Buddhist festival, shortly after papal flags had flown freely in Hue to honour the city's Catholic archbishop, the president's own brother.
Q 06Which US destroyer fought North Vietnamese torpedo boats in the Gulf of Tonkin on 2 August 1964?
USS Maddox
USS Maddox was on an intelligence-gathering patrol when three North Vietnamese boats attacked; with help from carrier jets it drove them off, yet within a week Congress had authorised military action.
Q 07What did later investigation conclude about the reported second Tonkin attack on 4 August 1964?
It never happened
It never happened: the two destroyers spent the night firing at radar contacts, but a study by the NSA's own historian, made public in 2005, concluded that no North Vietnamese boats were there.
Q 08The Gulf of Tonkin Resolution gave sweeping war powers to which president?
Lyndon B. Johnson
Lyndon B. Johnson got the resolution through the House unanimously and the Senate with only two votes against, then used it to wage war for years without any formal declaration.
Q 09Operation Rolling Thunder was what kind of campaign?
A sustained bombing of North Vietnam
A sustained bombing of North Vietnam, Rolling Thunder began with strikes limited to the south of the country and crept gradually north, running from March 1965 into late 1968 without forcing Hanoi to give in.
Q 10Which country became the most heavily bombed in history as the US tried to cut the Ho Chi Minh Trail?
Laos
Two million tons fell on it between 1964 and 1973, roughly what the US dropped on Europe and Asia in all of World War II.
Q 11The Ho Chi Minh Trail ran from North to South Vietnam mainly through which country?
Laos
The communists called it the Truong Son Strategic Supply Route after the Annamite mountains.
Q 12The 1965 Battle of Ia Drang, later filmed as We Were Soldiers, was the first large-scale test of what tactic?
Helicopter air assault
Helicopter air assault put Hal Moore's battalion of the 7th Cavalry into Landing Zone X-Ray, where it was attacked within hours by North Vietnamese regulars in the first major battle between the two armies.
Q 13Which US commander in Vietnam from 1964 to 1968 measured progress in his war of attrition by enemy 'body count'?
William Westmoreland
Q 21Which helicopter pilot intervened to stop the killing at My Lai and was later decorated for it?
Hugh Thompson Jr.
Hugh Thompson Jr. landed his helicopter between the soldiers and fleeing villagers and told his crew to fire on the Americans if the killing went on; the Army gave him the Soldier's Medal 30 years later.
Q 22Of the 26 soldiers charged over the My Lai massacre, who was the only one convicted?
William Calley
William Calley, a platoon leader, was given a life sentence for murdering 22 villagers, but it was cut on appeal and he spent only about three years confined, under house arrest, before being paroled in 1974.
Q 23What name did the White House give the policy of handing the ground war to Saigon's army as US troops left?
William Westmoreland asked for some 200,000 more troops after the Tet attacks of early 1968 had shaken confidence in his reports of progress; within months he was moved to Washington as Army chief of staff.
Q 14The Tet Offensive of 1968 was named after what?
The Lunar New Year holiday
The Lunar New Year holiday had brought an informal truce in earlier years, so many of South Vietnam's troops were on leave when more than 100 towns and cities came under attack.
Q 15Which Saigon building did Viet Cong sappers breach on the first night of the Tet Offensive?
The US Embassy
The US Embassy compound was breached by a Viet Cong sapper team that fought in its grounds for about six hours but never got inside the main building; every attacker was killed or captured.
Q 16Roughly how many communist troops took part in the Tet Offensive?
85,000
The offensive was a tactical defeat for them, with more than 45,000 killed.
Q 17Eddie Adams's Pulitzer-winning photograph 'Saigon Execution' shows a Viet Cong prisoner shot by whom?
The chief of the National Police
The chief of the National Police, General Nguyen Ngoc Loan, fired the shot in a Saigon street; photographer Eddie Adams later wrote that the general had killed the prisoner, but he had killed the general with his camera.
Q 18The Marine base besieged for 77 days in early 1968 was at which location?
Khe Sanh
Khe Sanh was defended with some 100,000 tons of bombs dropped on the hills around it, yet by July 1968, three months after the siege was lifted, the US had closed the base and pulled out.
Q 19Where was the Viet Cong base at Cu Chi, on the edge of Saigon, hidden from American forces?
In a network of tunnels
In a network of tunnels: the Cu Chi complex held hospitals and living quarters, so the US and its allies trained 'tunnel rats' to crawl in after the guerrillas.
Q 20The My Lai massacre of March 1968 took place in which South Vietnamese province?
Quang Ngai
Charlie Company was expecting to find a Viet Cong battalion that was not there.
Vietnamization
Vietnamization cut US troop numbers from more than half a million in 1969 to about 69,000 in 1972, but that year's Easter Offensive showed how heavily Saigon's army still leaned on American air power.
Q 24Which phrase did the US president elected in 1968 use for the Americans he claimed supported the war?
The silent majority
The silent majority was asked, in a televised address on 3 November 1969, to back a gradual end to the war instead of the immediate pull-out demanded by nationwide Moratorium protests three weeks earlier.
Q 25The Kent State shootings of May 1970 followed protests over the war expanding into which country?
Cambodia
Cambodia had been entered by US and South Vietnamese troops days earlier; at Kent State, Ohio National Guardsmen fired more than 60 rounds in 13 seconds, and the deaths swelled a student strike that shut campuses nationwide.
Q 26Which band rushed out the protest single 'Ohio' within weeks of the Kent State shootings?
Crosby, Stills, Nash & Young
Crosby, Stills, Nash & Young recorded 'Ohio' on 21 May 1970, days after Neil Young saw Life magazine's photographs of the shootings and wrote the song; it was on sale by early June.
Q 27Who leaked the Pentagon Papers to The New York Times in 1971?
Daniel Ellsberg
Daniel Ellsberg was tried for espionage and theft, but the judge threw the case out in 1973 after it emerged that a White House team, the 'plumbers', had burgled his psychiatrist's office.
Q 28Which defense secretary commissioned the secret study that became the Pentagon Papers?
Robert McNamara
Robert McNamara ordered the study in 1967, saying he wanted a written record for historians; a leak made it public within four years, yet it stayed officially classified until 2011.
Q 29The first Vietnam draft lottery, in December 1969, ranked young American men for call-up according to what?
Their birthday
Their birthday decided it: 366 capsules, one for each date, were drawn from a glass jar, and September 14 came out first, putting men born that day at the front of the line.
Q 30Agent Orange was sprayed on forests and crops under which operation?
Ranch Hand
Ranch Hand aircraft sprayed some 20 million gallons of herbicides over about a decade; the dioxin in Agent Orange was later tied to cancers, and the US now presumes many veterans' illnesses stem from exposure.