on 5 October 1943. It was then redesignated No. 1 Combat Training Wing (changed to No. 1 Tactical Exercise Unit at a later date). In the event of a German invasion the OTU's 'E' and 'F' Flights would have become No. 556 Squadron to operate within the Peterhead Sector. The unit was reformed on 15 December 1944, at Milfield in No. 12 Group, equipped with both Hawker Typhoon and Hawker Tempest V's until disbanding on 14 February 1946. No. 1 Combat Training Wing (5 October 1943 – 1 January 1944) See No. 56 Operational Training Unit. No. 1 Tactical Exercise Unit (1 January - 31 July 1944) See No. 56 Operational Training Unit. No. 9 (Pilots) Advanced Flying Unit (12 September 1944 – 21 June 1945) Satellite Landing Ground for No. 9 (Pilot) Advanced Flying Unit ((P)AFU) based at RAF Errol. HQ, No. 70 (Signal) Wing (25 August 1945 – 31 May 1946) Satellite to RAF Inverness References Citations Bibliography Royal Air Force stations in Scotland Royal Air Force stations of World War II in the United Kingdom History of Angus, Scotland Buildings and structures in Angus, Scotland