Operation Crimp Westmoreland requested further reinforcement and US and allied forces increased to 44 battalions which would be used to directly bolster the ARVN. Australia's growing involvement in Vietnam reflected the American build up. In 1963, the Australian government had committed a small advisory team, known as the Australian Army Training Team Vietnam (AATTV), to help train the South Vietnamese forces. However, in June 1965 the decision to commit ground troops was made, and the 1st Battalion, Royal Australian Regiment—originally commanded by Lieutenant Colonel Ivan 'Lou' Brumfield—was dispatched. Supporting 1 RAR was 1 Troop, A Squadron, 4th/19th Prince of Wales's Light Horse
What Happened to Us the song with Stan Walker during the Australian leg of Chris Brown's F.A.M.E. Tour in April 2011. Mauboy and Walker later performed "What Happened to Us" on "Dancing with the Stars Australia" on 29 May 2011. From November 2013 to February 2014, "What Happened to Us" was part of the set list of the To the End of the Earth Tour, Mauboy's second headlining tour of Australia, with Nathaniel Willemse singing Sean's part. Source: What Happened to Us "What Happened to Us" is a song by Australian recording artist Jessica Mauboy, featuring English recording artist Jay Sean. It was written