Republican candidate Richard M. Nixon’s promise during the 1968 presidential election campaign to extricate the United States from the Vietnam War, combined with the loss of American domestic political support resulting from the January 1968 Tet Offensive, saw a fundamental change to how the war was conducted. The United States began a process of withdrawing their own combat forces and placing the burden for future combat operations on ARVN formations. While the Australian Government was aware of this change in policy, it was not actively included in American political deliberations and hence was unable to take an active position in the face of Vietnamisation. Left with no detailed guidance on the intended timelines for American withdrawal, the Australian Government could provide no direction to Army on the level of future commitment to the war, other than to reinforce the existing rhetoric that participation in the conflict remained vital for Australian national interests. In this policy vacuum, Army leadership concentrated on the military aspects of the war, with the CGS Exercises of both 1967 and 1968 exploring the implications of increasing the size of the force deployed to South Vietnam.