It supported the 5th Brigade until being reduced to a battery-sized sub unit, and assigned to the 9th Regiment, Royal Australian Artillery in 2018.

[1] At this time, the 3rd Anti-Tank Regiment raised in New South Wales as part of the 2nd Division.

[3] This numerical designation replicated the designation of the 23rd Australian Field Artillery (Howitzer) Brigade that had served as part of the 3rd Division on the Western Front from 1916 until early 1917 when it was disbanded as part of a reorganisation to consolidate the number of guns within each battery and reduce the number of artillery brigades in each division.

[5][6] Plans had been made to raise this unit again as the 23rd Field Regiment during World War II from Y Troop, 18th Field Battery, which had been raised as reinforcements for the Darwin Mobile Force, but these plans were cancelled in June 1942.

[10] Throughout the 2000s, the regiment had depots in Kogarah, Sutherland, Holsworthy and Canberra, and deployed personnel in support of operations in the Solomon Islands, East Timor, Iraq and Afghanistan.