J (Sidi Rezegh) Battery Royal Horse Artillery are a Close Support Battery of 3rd Regiment Royal Horse Artillery.

[1] J Battery was originally raised in India on 4 April 1805[2] as The Troop of Madras Horse Artillery, part of the Madras Army of the Honourable East India Company.

[4] By 5 August 1825, the Madras Horse Artillery had grown to 8 batteries and so was reorganized as two brigades; the battery was redesignated as A Troop, 1st Brigade, Madras Horse Artillery.

Following the end of the war, 160 officers and men left Point Natal for India on the SS Ionian in October 1902, and after arrival in Bombay, was stationed in Meerut, Bengal Presidency.

[7] The battery was given the Honour title "Sidi Rezegh" for its action against a German attack during Operation Crusader,[8] during which A Troop commander George Ward Gunn earned the Victoria Cross,[9] and the battery commander Major Bernard Pinney was recommended for the VC.