At the outbreak of the First World War, a field artillery brigade of headquarters (four officers, 37 other ranks), three batteries (five and 193 each), and a brigade ammunition column (four and 154)[4] had a total strength just under 800 so was broadly comparable to an infantry battalion (just over 1,000) or a cavalry regiment (about 550).

[13] In practice just the title was transferred; the personnel and equipment were distributed amongst D, J and M batteries making them up to eight-gun units.

[9][10][11] The regiment took part in the final attempt to lift the Siege of Tobruk, Operation Crusader (18 November – 10 December)[19] – notably the Battle of Sidi Rezegh[20] where Second Lieutenant George Ward Gunn (J Battery) earned the Victoria Cross for his bravery during an attack by 60 German Tanks.

[21][b] On 26 April 1954, J Battery was awarded the Honour Title "Sidi Rezegh" in recognition of this action.

[23] The regiment was rearmed with 25 pounders after Sidi Rezegh,[24] and the batteries were redesignated as field artillery on 8 September 1942.

After World War II the regiment served in the UK, West Germany, Aden, Egypt, Kenya (September 1961-September 1964 with the regiment's main body at Alanbrooke Barracks, Gilgil) Hong Kong and Cyprus.

[29] In December 2000 D Battery deployed as part of NATO's KFOR to Kosovo on Op Agricola.

[31] From 2020 to 2022, the Regiment deployed as part of the NATO Enhanced Forward Presence on Operation Cabrit (Poland and Estonia).

[33] In March 2023,[34] the regiment re-roled to the Deep Fires role losing its L118 Light guns and replaced them with new M270 MLR Systems.

The next month her boyfriend, a fellow British soldier whom she met during her time in the 3rd Regiment Horse Artillery, also committed suicide.