9th Regiment, Royal Australian Artillery (9 Regt RAA) was re-formed on 15 January 2018 to command all of the Army Reserve (ARes) Light Batteries, who previously from 2013 onward were placed under operational command (OPCOM) of Infantry battalions, providing indirect fire support utilising F2 81mm Mortars.
RHQ 9 Regt RAA is based at Kogarah Multi-user Deport (MUD) in Sydney and now commands the following sub-units:
- 2nd/10th Light Battery (formerly part of the 5th/6th Battalion, The Royal Victoria Regiment the based in St Kilda in Melbourne)
- 3rd Light Battery (formerly part of the 11th/28th Battalion, The Royal Western Australia Regiment based at Irwin Barracks in Perth)
- 5th/11th Light Battery (formely part of the 25/49th Battalion, The Royal Queensland Regiment based at Gallipoli Barracks in Brisbane and across south eastern Queensland)
- 6th/13th Light Battery (formerly part of the 10th/27th Battalion, The Royal South Australian Regiment based at Keswick Barracks in Adelaide and Glenorchy in Hobart)
- 7th Light Battery (formerly part of the 2nd/17th Battalion, The Royal New South Wales Regiment based at Dee Why and Adamstown in Sydney)
- 23rd Light Battery (formerly part of the 4th/3rd Battalion, The Royal New South Wales Regiment based at Kogarah in Sydney)
9 Regt RAA takes its lineage from the 9th Australian Field Artillery (AFA) Brigade (part of the 3rd Australian Division in the First World War) and 2/9th Field Regiment RAA (part of the 8th Australian Division in the Second World War). Each of the above Batteries also take their own lineage from predecessor Regiments and Batteries stretching back to before Federation in 1901.
You can find out more about the Royal Australian Artillery here: https://www.army.gov.au/our-people/corps/royal-regiment-of-australian-artillery