The operations are referred to as the Tet Offensive because there was a prior agreement to "cease fire" during the Tet Lunar New Year celebrations. Both North and South Vietnam announced on national radio broadcasts that there would be a two-day cease-fire during the holiday. Nonetheless, the Communists launched an attack that began during the early morning hours of 30 January 1968, the first day of Tet. In Vietnamese, the offensive is commonly called Tết Mậu Thân (Tet, year of the monkey). Military planners called it the "General Offensive and Uprising" (Cuộc Tổng tiến công và nổi dậy).
The Communists launched a wave of attacks on the morning of 30 January in the I and II Corps Tactical Zones of South Vietnam. This early attack did not lead to widespread defensive measures.
Planning in Hanoi for a winter-spring offensive during 1968 had begun in early 1967 and continued until early the following year. According to American sources, there has been an extreme reluctance among Vietnamese historians to discuss the decision-making process that led to the General Offensive General Uprising, even decades after the event.[27] In official Vietnamese literature, the decision to launch Tet Mau Than was usually presented as the result of a perceived U.S. failure to win the war quickly, the failure of the American bombing campaign against the North Vietnam, and the anti-war sentiment that pervaded the population of the U.S.[28] The decision to launch the general offensive, however, was much more complicated.
The decision signaled the end of a bitter, decade-long