In 1965, the Pentropic structure was abolished and the divisional headquarters' was tasked with determining the readiness of units deploying to Vietnam. It fulfilled this role until Australia's commitment to the conflict ended in late 1972. In November the following year, the division was established at Enoggera Barracks in Brisbane, Queensland, and was re-formed as the Australian Army's "main striking force". Throughout the Cold War era, the division grew into a formation of over 13,000 personnel, which, at its peak in the early 2000s consisted of four brigades: two Regular, one integrated and one Reserve spread across Queensland, New South Wales and the Northern Territory. In 1997, the formation's headquarters assumed the additional task of raising a deployable joint force headquarters, tasked with commanding Army, Royal Australian Air Force and Royal Australian Navy assets during large-scale operations.