No. 691 Squadron RAF
No. 691 Squadron RAF was an Anti-aircraft cooperation squadron of the Royal Air Force from 1943 to 1949.
History
The squadron was formed on 1 December 1943 at RNAS Roborough from 1623 (anti-aircraft co-operation) Flight. It was tasked with anti-aircraft co-operation duties in the Plymouth area operating a variety of aircraft in this role. Most of the work was to fly as training targets for Royal Navy ships.The squadron moved a number of times from the end of the war to RAF Exeter, RAF Weston Zoyland, RAF Fairwood Common, and finally to RAF Chivenor. Its existence ended there when it was renumbered to No. 17 Squadron RAF on 11 February 1949.
Aircraft operated
| From | To | Aircraft | Variant |
| December 1943 | March 1945 | Fairey Barracuda | Mk.II |
| December 1943 | April 1945 | Boulton Paul Defiant | Mks.I & II |
| December 1943 | March 1944 | Hawker Hurricane | Mk.I |
| December 1943 | February 1949 | Airspeed Oxford | Mks. I & II |
| March 1944 | April 1945 | Hawker Hurricane | Mk.IIc |
| April 1945 | May 1947 | Vultee Vengeance | Mk.IV |
| July 1945 | August 1945 | Supermarine Spitfire | Mk.Vb |
| August 1945 | February 1949 | Miles Martinet | |
| August 1945 | February 1949 | Supermarine Spitfire | Mk.XVI |
| November 1945 | February 1949 | North American Harvard | Mk.IIb |