Write a 300 word minimum During the Vietnam Conflict , a major event took place in 1968. It was called the Tet Offensive. What happened? How did this impact the presidency of Lyndon B. Johnson? How did this impact the Vietcong? What did North Vietnam do in reaction to this event? What was the impact on the conflict of Operations Linebacker I and II? What happened at Khe Sanh (Marines)?