The Bengal Army of the Honourable East India Company formed its first battery of Horse Artillery, the Experimental Brigade, Bengal Horse Artillery on 4 December 1800 (still in existence as F Battery, RHA).

[3] By the time the Indian Rebellion of 1857 broke out, the Bengal Horse Artillery had grown to 13 batteries, organised as three brigades.

[b] On transfer, 2nd Horse Brigade, Royal Artillery comprised:[4] D Battery was disbanded on 12 October 1862.

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

[23] Its first action was the Battle of Mons on 23 and 24 August where the division formed the left flank.

The brigade served with the 2nd Cavalry Division on the Western Front for the rest of the war.

Its final action was in the Capture of Mons (11 November, 3rd Canadian Division with 5th (Royal Irish) Lancers and one section[j] of D Battery, RHA).

[30] At the Armistice, it was still serving with 2nd Cavalry Division with D, E and J Batteries RHA (eighteen 13 pounders).

It was replaced by F Battery, RHA as St John's Wood Barracks.

In October 1923, the brigade moved to Egypt, before returning to Newport in November 1926 (D Battery at Trowbridge).

[34] The brigade was mechanised in Egypt, replacing its horses and 13 pounders with 3.7" Howitzers towed by Light Dragon gun tractors.