The 2nd Infantry Brigade (later 2 (South East) Brigade) was a regional brigade of the British Army, active since before the First World War. It was the regional formation of the Army in the South East of England–the Brigade commanded and administered soldiers throughout Kent, Surrey and Sussex–but also Brunei. In December 2014 the Brigade merged with 145 (South) Brigade to form Headquarters 11th Infantry Brigade and Headquarters South East.