Tet Offensive

The Tet Offensive (Vietnamese: Sự kiện Tết Mậu Thân 1968, or Tổng tiến công và nổi dậy Tết Mậu Thân) was one of the largest military campaigns of the Vietnam War, launched on January 30, 1968 by forces of the Viet Cong and North Vietnamese People's Army of Vietnam against the forces of South Vietnam, the United States, and their allies. It was a campaign of surprise attacks against military and civilian commands and control centers throughout South Vietnam. The name of the offensive comes from the Tết holiday, the Vietnamese New Year, when the first major attacks took place.

The communists launched a wave of attacks in the late night hours of 30 January in the I and II Corps Tactical Zones of South Vietnam. This early attack did not lead to widespread defensive measures. When the main communist operation began the next morning the offensive was countrywide and well coordinated, eventually more than 80,000 communist troops striking more than 100 towns and cities, including 36 of 44 provincial capitals, five of the six autonomous cities, 72 of 245 district towns, and the southern capital. The offensive was the largest military operation conducted by either side up to that point in the war.