Career
Educated at the Oratory School, Edgbaston, Pereira was commissioned into the Coldstream Guards in 1890. He served in the Second Boer War and then in World War I and was appointed Commanding Officer of 2nd Battalion Coldstream Guards in 1914, Commander of 85th Brigade (which he led at the Battle of Loos) in 1915 and Commander of 1st Guards Brigade in January 1916 before being made General Officer Commanding 2nd Division in December 1916. After the War he became General Officer Commanding 56th (London) Infantry Division from 1919 until his retirement in 1923.
In World World War II he commanded the Local Defence Volunteers in London.