By 1962 the situation in South Vietnam had become bad enough that Diem submitted a request for assistance to the United States and its allies to counter the growing insurgency and the threat that it posed to South Vietnam's security. Following this the US began to send advisors to provide tactical and logistical advice to the South Vietnamese. At the same time, the US sought to increase the legitimacy of the South Vietnamese government by instituting the Many Flags program, hoping to counter the communist propaganda that South Vietnam was merely a US puppet state and to involve as many nations as possible. Thus Australia, as an ally of the United States with obligations under the ANZUS Pact, and in the hope of shoring up its alliance with the US, became involved in the Vietnam War. Between 1962 and 1972 it would send almost 60,000 personnel to Vietnam, including ground troops, naval forces and air assets, and would contribute large amounts of material to the war effort.