United States dramatically increased military involvement in Vietnam, deploying ground troops and conducting extensive bombing campaigns against North Vietnam and Viet Cong forces in South Vietnam. The war devastated Vietnamese countryside through defoliants like Agent Orange, forced peasant displacement, and massive casualties, while growing US anti-war movement challenged government credibility and contributed to broader cultural transformations in American society.

Vietnam War generated extensive poetry from American veterans like Yusef Komunyakaa and Bruce Weigl processing trauma and moral ambiguity, while Vietnamese poets like Thanh Tâm Tuyen wrote under censorship about war's devastation. Anti-war poetry by Ginsberg, Rich, and others connected military intervention to domestic injustices, creating influential models for politically engaged poetry addressing imperialism, environmental destruction, and the human costs of distant conflicts.