U.S. Forces Surprised by Tet Offensive (2) tv-14 Play video Select your TV provider to log in to have full access to videos Select your TV provider See all providers Don't see your TV provider? Learn more You can access this video on the free HISTORY® apps. *You must verify your TV provider towatch this video on the App Your Parental Control settings do not allow you to view this content. U.S. Forces Surprised by Tet Offensive (2 min) tv-14 A war report describes an attack by the Viet Cong on the Presidential Palace. On January 30, 1968, the Viet Cong and North Vietnamese forces launched a massive surprise attack on key cities in South Vietnam. It was a major turning point in the war.