On 31 December 1900, the day before Federation, a survey of the strength of colonial forces found that the South Australian colonial forces consisted of 135 officers and 2,797 other ranks. Following South Australia's admission to the Commonwealth of Australia, all of the South Australian forces were drawn into the Australian Army. The 1st Battalion of the Regiment of Adelaide Rifles was redesignated as the 10th Australian Infantry Regiment (Adelaide Rifles), the 2nd Battalion became the South Australia Infantry Regiment, 'G' Company became the South Australia Scottish Infantry (Mount Gambier), and 'H' Company Scottish became 'G' Company (Scottish) South Australia Infantry Regiment. The artillery was also reorganised, with 'A' Battery becoming No. 1 South Australian Battery, Australian Field Artillery.