Another coup plot against the South Vietnamese military government is reported

Colonel Thảo and allied officers attempted to overthrow the military government. The plot failed, but political instability continued and Thảo remained active in later conspiracies. FRUS reports are...

U.S. aircraft launched a sustained bombing campaign against North Vietnam, intended to pressure Hanoi and support the South Vietnamese government. The gradual escalation devastated infrastructure...

U.S. Marines landed at Da Nang, beginning the large-scale deployment of U.S. ground combat forces. The mission moved beyond advising and aid into direct combat, while South Vietnamese forces and...

Faculty and students at the University of Michigan held an overnight teach-in on U.S. policy in Vietnam. The format turned the university into a public forum for debate and helped antiwar organizing...

Thousands gathered in Washington, D.C., for an early large-scale protest against the war. Speakers linked U.S. intervention abroad to questions of democratic accountability and domestic priorities,...

The Vietnam Day Committee organized a prolonged protest and teach-in at the University of California, Berkeley. It brought faculty, students, and community activists together, challenging the...

National Liberation Front forces overran key positions in Đồng Xoài and fought South Vietnamese and U.S.-supported units. The battle highlighted the vulnerability of provincial towns and the limits of...

Johnson announced that U.S. forces in Vietnam would rise from about 75,000 to 125,000 and that conscription would expand. The understated announcement marked a decisive shift to a large U.S. ground...

U.S. Marines launched Operation Starlite against NLF forces near Chu Lai, one of the first major U.S. ground offensives. Civilian communities were caught within an expanding battle space, as U.S....

Antiwar groups in the United States and abroad organized protests under the banner of the International Days of Protest. The actions connected opposition to the war with a wider critique of U.S....