He was commissioned into the Irish Guards as a 2nd Lieutenant in 1931. As acting Commanding Officer of the 2nd Armoured Battalion Irish Guards he served under his cousin Joe Vandeleur (their grandfathers were brothers) in the breakout of XXX Corps during Operation Market-Garden. He went on to become acting commander of the British 5th Guards Armoured Brigade in 1945. He retired from the Army in 1949.
Vandeleur died on 9 March 1978. 
|This biographical article related to the British Army is a stub. You can help Wikipedia by expanding it.|