Hurricane No. 42 Operational Training Unit at RAF Ashbourne and RAF Darley Moor with Whitley, Oxford, Anson & Albemarle No. 51 Operational Training Unit at RAF Cranfield and RAF Twinwood Farm with Mosquito No. 53 Operational Training Unit RAF at RAF Kirton-in-Lindsey, RAF Hibaldstow and RAF Caistor with Spitfire No. 54 Operational Training Unit at RAF Charterhall and RAF Winfield with Beaufighter No. 57 Operational Training Unit at RAF Eshott and RAF Boulmer with Spitfire No. 59 Operational Training Unit at RAF Boulmer with Hurricane & Typhoon No. 60 Operational Training Unit at RAF High Ercall with Mosquito No. 61 Operational Training Unit at RAF Rednal and RAF Montford Bridge with Spitfire No. 62 Operational Training Unit at RAF Ouston with Anson & Wellington three Tactical Exercise Units: No. 1 Tactical Exercise Unit at RAF Kinnell with Hurricane & Spitfire No. 2 Tactical Exercise Unit at RAF Grangemouth and RAF Balado Bridge with Spitfire No. 3 Tactical Exercise Unit at RAF Annan] with Typhoon & Spitfire AI Conversion Unit Fighter Leaders School RAF No. 2 Aircraft Delivery Flight No. 58 Repair and Salvage Unit three other support/supply units 9 Group Communications Flight flying Hawker Hurricanes and Airspeed Oxfords from Samlesbury Aerodrome. It was absorbed into No. 12 Group RAF on 15 September 1944. Commanders The following officers had command of No. 9 Group: 1918 to 1919 1 April 1918 Brigadier-General H D Briggs 1940 to 1944 16 September 1940 Air Vice-Marshal W A McClaughry April 1942 Air Vice-Marshal L H Slatter 26 June 1942 Air Vice-Marshal W F Dickson 1942 Air Commodore C R Steele (Temporary appointment) 10 November 1942 Air Vice-Marshal J W Jones 2 July 1943 Air Vice-Marshal L N Hollinghurst 6 November 1943 Air Commodore C A Stevens (Temporary appointment) 7 December 1943 Air Vice-Marshal D F Stevenson See also List of Royal Air Force groups References Citations Bibliography Smith, David J., Action Stations 3: Wales and the North-West., Cambridge, UK: Patrick Stephens Ltd, 1981. . External links Air of Authority - A History of RAF Organisation - Group No's 1 - 9 009 Military units and formations established in 1918 1918 establishments in the United Kingdom