 At that time it was the only regular artillery regiment.On the eve of the Vietnam War the Regiment consisted of 101st Field Battery and 105th Field Battery (Independent), both equipped with 105 mm L5 Pack Howitzers, 102nd Light (4.2 inch Mortar) Battery and a Headquarters Battery.In April 1965 the decision was taken to deploy the 1st Battalion, Royal Australian Regiment (1RAR) to Vietnam.