 Giáp remained commander in chief of the People's Army of Vietnam throughout the war against South Vietnam and its allies, the United States, Australia, Thailand, South Korea, and the Philippines.He oversaw the expansion of the PAVN from a small self-defense force into a large conventional army, equipped by its communist allies with considerable amounts of relatively sophisticated weaponry, although this did not usually match the weaponry of the Americans.Giáp has often been assumed to have been the planner of the Tết Offensive of 1968, but this appears not to have been the case.