It was reestablished in 1901 as II Brigade,[a] RHA but was broken up at the outbreak of the First World War as its constituent battery was posted away.

Henceforth, batteries were designated in a single alphabetical sequence in order of seniority from date of formation.

[20] In September 1914, C Battery transferred to XIV Brigade which joined 7th Division at Lyndhurst on formation.

[26] The regiment was mechanized in August 1939 replacing its horses and 13 pounders with 3.7" Howitzers towed by Vickers Light Dragon gun tractors.

[27] At the outbreak of the Second World War, 2nd RHA was assigned to 1st Support Group of the 1st Armoured Division.

In October 1939, it moved to France where it was placed under direct command of General Headquarters, BEF.

[29] After evacuation from the continent, it was assigned to 2nd Support Group of 2nd Armoured Division, but did not join until July 1940.

N Battery returned to the UK to join 6th Regiment, Royal Horse Artillery.

[34] From 21 April 1942, the regiment served with 22nd Guards Brigade under command of 2nd South African Division in the Battle of Gazala.

[35] On 25 June it transferred to 22nd Armoured Brigade and took part in the Battle of Mersa Matruh and the Defence of the El Alamein Line.

[37] It left 1st Armoured Division on 26 September 1944 and came under direct command of Headquarters, Allied Armies in Italy where it remained until May 1945.

[42] It returned home to Roberts Barracks at Larkhill[42] as 2nd (Support) Regiment, Royal Artillery in September 1979.

[40] In March 1982 it became 2nd (Field) Regiment, Royal Artillery[40] and in April 1982, as part of a move to Münster with M109's, it joined 4th Armoured Division.

[45] The regiment was finally disbanded in 1993 as a result of the Options for Change and the drawdown from Germany.