The Essex Brigade, later 161st Brigade and 161st Infantry Brigade, was a volunteer infantry formation of the British Army in existence from 1888 until 1941, and again from 1947. It served at Gallipoli and in Palestine during the First World War and returned to Egypt in the early part of the Second World War before transferring to the British Indian Army and redesignated 161st Indian Infantry Brigade. In peacetime and during the wars the brigade was an integral part of the 54th (East Anglian) Infantry Division and contained mostly battalions of the Essex Regiment.