 Also buried in the RAF chapel are notable leaders of the RAF, including Lord Trenchard and Air Chief Marshal Dowding, as well as "Bomber" Harris, the man who led RAF Bomber Command during much of the Second World War.A tradition has grown that the remaining Battle of Britain veterans and their families hold their own, private service in the chapel prior to the Service of Thanksgiving and Rededication on Battle of Britain Sunday.The annual service on Battle of Britain Sunday is held in Westminster Abbey on the Sunday on or following Battle of Britain Day (15 September), and has taken place annually since 1943; the first service took place in St Paul's Cathedral and since has taken place in Westminster Abbey.