9 (Plassey) Battery Royal Artillery is an air defence battery of the Royal Artillery that serves with the British Army's 12th Regiment Royal Artillery. It is stationed at Baker Barracks, Thorney Island, West Sussex. On 19 February 1862 all the artillery of the East India Company was transferred to the Royal Artillery, and the battery became 1 Battery, 24 Brigade. In 1876 the battery moved to England and suffered an eclectic 6 years, re-roling and changing names many times. In 1882 it returned to what it knew and was posted to Burma, fighting in the Third Burma War.