Tet Offensive
The Tet Offensive was a series of coordinated attacks launched in early 1968 by forces of North Vietnam and the National Liberation Front, known to Americans as the Viet Cong, against cities, towns and military bases across South Vietnam. It was a military failure for the attackers, but it shattered the confidence of the American public in official claims that the war was being won, and it became one of the great turning points of the Vietnam War.
By 1967, the United States had more than 450,000 troops in Vietnam, and American commanders spoke of progress through attrition, the idea that communist forces could be worn down faster than they could replace their losses. Hanoi's leaders, frustrated by a stalemate, planned a bold change of strategy. They hoped a sudden, widespread assault would spark an uprising among the South Vietnamese population, break the South Vietnamese army and government, and convince Washington that the war could not be won. Diversionary fighting near remote places such as Khe Sanh drew American attention toward the border areas.
The main attacks began in the early hours of the Tet holiday, the Lunar New Year, at the end of January 1968, a time when a truce was customarily observed and many South Vietnamese soldiers were on leave. Assaults hit dozens of provincial capitals and other targets, including Saigon, where a small group of fighters entered the grounds of the American embassy. In the ancient city of Hue, communist forces held much of the city for weeks, and the battle to retake it was long and destructive. Mass killings of civilians took place in Hue during the occupation, and the fighting left much of the city in ruins. Elsewhere, the attacks were generally beaten back within days.
Militarily, the communist forces suffered heavy losses, especially among the Viet Cong's local fighters, and the expected popular uprising did not occur. Yet the shock of the offensive had a powerful political effect in the United States. Television and press coverage brought scenes of fighting in Saigon and Hue into American homes, and the apparent gap between optimistic official statements and events on the ground deepened what was already called a credibility gap. Historians still debate how much the media shaped opinion, and how much public support had already been eroding.
The consequences were significant. President Lyndon Johnson announced in March that he would limit bombing of North Vietnam and not seek reelection. Peace talks began in Paris, though they dragged on for years. The U.S. later shifted toward "Vietnamization," gradually handing combat responsibility to South Vietnamese forces while withdrawing American troops. The offensive remains a lasting example of how a battlefield defeat can still become a strategic and political victory.