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
Air transport in Vietnam and commercialization of air transportation. The aviation sector expanded greatly during its formative years, expanding from a few aircraft in what was then North Vietnam to eventually include a fleet of over 50 aircraft (including both Soviet- and US-made) in a unified Vietnam after 1976. Infrastructure was improved during this time, as airports country-wide were equipped with better facilities and materials for flight management and operations. CAAV grew to serve around 250,000 passengers a year, both domestically and on international routes to China, Laos, Cambodia and Thailand. On 9 December 2004, United Airlines made history when its Boeing 747-400 landed