Royal Observer Corps
In 1929 the control of the Observer Corps passed from the county police forces to the Air Ministry, although Chief Constables retained responsibility for personnel and recruitment matters. 1 March 1929 saw the establishment of the new "Headquarters of the Observer Corps" at Hillingdon House, RAF Uxbridge in the west of London, and Air Commodore Edward A D Masterman CB CMG CBE AFC RAF (Rtd) was appointed as the first commandant of the Observer Corps. "Air Cdre" Masterman held this appointment until his retirement on 1 March 1936, and was succeeded by Air Commodore Alfred Warrington-Morris CG CMG OBE AFC RAF (Rtd), who would lead the Observer Corps through the critical period during the Second World War which saw the RAF emerge bruised but victorious following the Battle of Britain of 1940.
Commandant Royal Observer Corps
The origins of the ROC go back to Metropolitan Observation Service of World War I which was founded by Air Vice Marshal Edward Ashmore. However, Ashmore never held the post of ROC Commandant. The first two commandants were recently retired RAF Air Commodores, the next two were Auxiliary Air Force officers and the remainder were serving RAF officers. The last three commandants held the appointment in addition to their primary appointment as Senior Air Staff Officer (SASO) at Headquarters No. 11/18 Group RAF, which was colocated with HQROC at RAF Bentley Priory.