reached a peak total of almost 8,000, comprising about one third of the Army's combat capacity. Between 1962 and 1972 almost 60,000 personnel served in Vietnam, including ground troops, naval forces and air assets. In July 1966, new Prime Minister Harold Holt expressed his government's support for the US and its role in Vietnam in particular. "I don't know where people would choose to look for the security of this country were it not for the friendship and strength of the United States." While on a visit in the same year to the US, Holt assured President Lyndon B. Johnson "...I hope there is corner of your mind and heart which takes cheer from the fact that you have an admiring friend, a staunch friend, [Australia] that will be all the way with LBJ." The Liberal-CP Government was returned with a massive majority in elections held in December 1966, fought over national security issues including Vietnam. The opposition Labor Party had advocated the withdrawal of all conscripts from Vietnam, but its deputy leader Gough Whitlam had stated that a Labor government might maintain regular army troops there. Arthur Calwell, who had been leader of the Labor Party since 1960, retired in favour of Whitlam a few months later. Despite Holt's sentiments and his government's electoral success in 1966, the war became unpopular in Australia, as it did in the United States. The movements to end Australia's involvement gathered strength after the Tet Offensive of early 1968 and compulsory national service (selected by ballot) became increasingly unpopular. In the 1969 elections, the government hung on despite a significant decline in popularity. Moratorium marches held across Australia in mid-1970 attracted large crowds- the Melbourne march of 100,000 being led by Labor MP Jim Cairns. As the Nixon administration proceeded with Vietnamization of the war and began the withdrawal of troops, so did the Australian Government. In November 1970 1st Australian Task Force was reduced to two battalions and in November 1971, 1ATF was withdrawn from Vietnam. The last military advisors of the AATTV were withdrawn by the Whitlam Labor Government in mid-December 1972. The Australian military presence in Vietnam had lasted 10 years, and in purely human cost, more than 500 had been killed and more than 2,000 wounded. The war cost Australia $218 million between 1962 and 1972. Reform and reaction: 1972–1996 The Whitlam Government: 1972–75 Elected in December 1972 after