The 1st Armoured Regiment was raised as a regular unit on 7 July 1949 at Puckapunyal in Victoria when the 1st Armoured Car Squadron, which had returned from occupation duties in Japan a few months earlier, was converted to a tank unit. The formation occurred following the renaming of a reserve unit of the Citizens Military Forces (CMF) of the same name, which subsequently became the 1st Royal New South Wales Lancers and its battle honours and history perpetuated by this unit, in order to reallocate the name to the tank regiment that was to be established in the new Australian Regular Army. At first only one squadron strong, planning commenced to expand to full strength as soon as possible under the command of Major Cecil Ives. Formal affiliation with the Royal Tank Regiment (RTR) was recognised two years later and the regiment adopted their regimental colours of Brown, Red and Green, which date back to the Battle of Cambrai during the First World War in 1917. These same colours had also been used by the Australian Tank Corps prior to the Second World War.