Number 39 Squadron is an inactive squadron of the Royal Air Force. It last operated the General Atomics MQ-9A Reaper from Creech AFB, Nevada, between January 2007 and August 2022. It had previously operated the English Electric Canberra PR.7, PR.9 and T.4 from RAF Marham, Norfolk, as No. 39 (1 Photographic Reconnaissance Unit) Squadron between July 1992 and July 2006. History First World War No. 39 Squadron was founded at Hounslow Heath Aerodrome on 15 April 1916 with Royal Aircraft Factory B.E.2s and B.E.12s in an attempt to defend against German Zeppelin raids on London. Having moved to RFC Suttons Farm, 39 Squadron achieved its first success on the night of 2/3 September 1916, when Lieutenant William Leefe Robinson shot down the German Airship Schütte-Lanz SL11, being awarded the Victoria Cross for this action. On 23 September 1916, the German Navy launched another Zeppelin raid against London. Responding to this raid, 2nd Lieutenant Frederick Sowrey of No. 39 Squadron shot down Zeppelin L.32, while Alfred Brandon in another No. 39 Squadron B.E.2 engaged Zeppelin L.33, already damaged by anti-aircraft fire, with L.33 force landing at Little Wigborough, Essex, and being destroyed by its crew. On the night of 1/2 October 1916, 2nd Lieutenant W. L. Tempest of 39 Squadron, flying a B.E.2c, spotted Zeppelin L.31 illuminated by searchlights over southwest London and shot it down with the loss of the entire airship crew. The squadron continued in the defence of London, supplementing its B.E.2s and B.E.12s with three Royal Aircraft Factory S.E.5s to help deal with daylight attacks by German Gotha bombers, with at least one Armstrong Whitworth F.K.8 also operated by the unit. The squadron re-equipped with Bristol F.2 Fighters in September 1917, but had no more success against German raiders until the night of 19/20 May 1918, when a No. 39 Squadron Bristol Fighter shot down a Gotha bomber. In October 1918, it was re-equipped with Royal Aircraft Factory F.E.2b aircraft and sent to France for night bombing, but was disbanded five days after the Armistice. Between the wars It was reformed on 1 July 1919, when No. 37 Squadron based at Biggin Hill was renumbered. The squadron was reduced to a cadre in December 1919, but did not disband, and in April 1921 it was decided to return the Squadron to operations. By May that year, the squadron was fully manned and received a number of Avro