| A | B |
| Ho Chi Minh | Leader of North Vietnam |
| Vietminh | Communist group led by Ho Chi Minh |
| domino theory | Eisenhower's explanation for stopping communism |
| Dien Bien Phu | Major French outpost captured by the Vietminh |
| Geneva Accords | Peace agreement that split Vietnam in two |
| Ngo Dinh Diem | Leader of South Vietnam |
| Vietcong | Communist rebel group in South Vietnam |
| Ho Chi Minh Trail | Network of paths running between North and South Vietnam |
| Tonkin Gulf Resolution | Allowed President Johnson to fight in Vietnam |
| Robert McNamara | Secretary of defense under Johnson |
| Dean Rusk | Secretary of state under Johnson |
| William Westmoreland | Commander of US troops in Vietnam |
| Army of the Republic of Vietnam (ARVN) | South Vietnamese military forces |
| napalm | Gasoline-based explosive |
| Agent Orange | Chemical that destroyed jungle land |
| search-and-destroy mission | Tactic in which US troops destroyed Vietnamese villages |
| credibility gap | Situation in which the US public no longer believed the Johnson administration |
| draft | System for calling people to military service |
| New Left | Name given to the youth movement of the 1960s |
| Students for a Democratic Society (SDS) | Prominent group of the New Left |
| Free Speech Movement | New Left group that attacked business and government |
| dove | American individual who called for America to withdraw from Vietnam |
| hawk | American individual who supported the war effort |
| Tet offensive | Series of Vietcong attacks during the 1968 Tet holiday |
| Clark Clifford | A Lyndon Johnson adviser who became his secretary of defense |
| Robert Kennedy | A Democratic presidential candidate who ran on antiwar platform |
| Hubert Humphrey | The 1968 Democratic nominee for president |
| George Wallace | A third-party candidate in the 1968 presidential election |
| Richard Nixon | President of the United States, elected 1968 |
| Henry Kissinger | Nixon adviser who helped negotiate an end to the war |
| Vietnamization | President Nixon's plan for ending America's involvement in the war |
| silent majority | Mainstream Americans who supported Nixon's policies |
| My Lai | Site of massacre of Vietnamese civilians by American soldiers |
| Kent State University | Site of protest where National Guard killed four students |
| Pentagon Papers | Government documents that showed the government had no real plan for leaving Vietnam |
| War Powers Act | Act that forbids the president from mobilizing troops without Congressional approval |