| A | B |
| November 2, 1963 | Saigon: Diem overthrown & assassinated, replaced with military junta (military council in charge) |
| 1963 | Johnson promises not to send soldiers to Vietnam |
| Gulf of Tonkin | Aug 4 1964 – Maddox “attacked” |
| Gulf of Tonkin Resolution | Congress empowers Johnson to take measures to repel any attack against US |
| Gulf of Tonkin Resolution 2 | Passes 416 – 0 in House and 88-2 in Senate |
| November 1964 | Johnson defeats Goldwater for Presidency |
| February 1965 | orders bombs of North Vietnam after attack at Pleiku kills 7 US soldiers |
| April 1, 1965 | 20,000 US troops sent to support S Vietnam – Johnson violates promises |
| January 31 1968 – Tet Offensive | Viet Cong attacked US areas in S. Vietnam; 1st correct depiction of war in Vietnam; Many began to oppose war |
| March 16th 1968 – My Lai Massacre | A lieutenant leads group into town and kills 120 civilians |
| Vietnam War | Becomes longest war in US history; Johnson will not run again |
| May 1968 | Paris Peace talks begin |
| Election of 68 | Nixon defeats Humphrey and Wallace with 43.4 % of vote |
| March 1969 | US begins secret bombing of N Vietnam & Cambodia – Nixon avoids anti-war protests |
| September 1969 | First reduction of troops/Vietnamization–begin to teach Vietnam to defend themselves |
| April 1970 | US troops enter Cambodia despite Nixon’s plea that US troops were withdrawing |
| May 4 1970 | Kent State Massacre - National Guard forces kill four students protesting Vietnam involvement |