How the Tet Offensive (1968) transformed the Vietnam War?

The Vietnam War before the Tet Offensive The most iconic conflict of the Cold War era is undoubtedly the Vietnam War (1955-1975) otherwise known as the Second Indochina War. The fighting was spread across Vietnam, Laos, and Cambodia, with substantial civilian and military casualties of the local population with some estimates going over 4 million deaths. The Vietnam War was in all senses a continuation of the First Indochina War (1946-1954) in which Vietnam was divided along the 17th parallel, with the communist rule in the north and anti-communist government in the south.