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
1947–50 in the Vietnam War communist activity was coordinated worldwide. Thus, the attack on South Korea caused the U.S. to become more concerned about the Việt Minh insurgency in Vietnam. Việt Minh forces were estimated to have grown to 250,000 personnel, including 120,000 in regular units organized into divisions. The remaining troops were regional and popular and primarily concerned with defense and security. An estimated 15,000 Chinese, in both Vietnam and China, assisted the Việt Minh with training, technicians, and advisers. The French had about 150,000 soldiers in Vietnam. The pro-French Vietnamese army numbered about 16,000 The first U.S. military advisers to Vietnam arrived in