No. 515 Squadron RAF
| No. 515 Squadron RAF | |
|---|---|
| Active | 1 Oct 1942 – 10 Jun 1945 |
| Country |
 United Kingdom
|
| Branch |
 Royal Air Force
|
| Role | Electronic countermeasures |
| Part of |
No. 11 Group RAF, Fighter Command No. 100 Group RAF, Bomber Command |
| Motto(s) |
Latin: Cleriter ferite ut hostes nacesit (Translation: "Strike quickly to kill the enemy") |
| Insignia | |
| Squadron Badge heraldry | A gauntlet holding a winged dagger in bend sinister, trusting to the dexter |
| Squadron Codes | 3P (Feb 1944 – Jun 1945) |
No. 515 Squadron RAF was a squadron of the Royal Air Force formed during the Second World War. It ushered in Electronic countermeasures (ECM) warfare, jamming enemy radar installations from October 1942 as the only such squadron in the RAF initially. Later in the war 515 Sqn was joined by other squadrons as part of No. 100 Group RAF. The squadron disbanded after VE day, when the need for such a specialised squadron had reduced.
The squadron was formed from Defiant Flight, also known as Special Duties Flight – an electronic countermeasuress unit equipped with the Boulton Paul Defiant Mk.II – at RAF Northolt on 1 October 1942, It moved to RAF Heston later that month. As part of 11 Group, 515 Sqn performed radar jamming duties, using Moonshine and Mandrel equipment.
From May 1943, 515 Sqn re-equipped with the Bristol Beaufighter Mk.IIF.
The squadron transferred to No. 100 Group RAF in December 1943 as part of Bomber Command, and moved to RAF Little Snoring in Norfolk. There they re-equipped with de Havilland Mosquito Mk.VIs in March 1944, and operated these for the remainder of the war. At the time of its disbandment on 10 June 1945, 515 squadron had carried out 1,366 operational sorties with the Mosquito with a loss of 21 aircraft, with most of its aircrew transferring to No. 627 Squadron RAF. T
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