504 Squadron came into being on the 14th March 1926 based at Hucknell as part of the Special Reserve Squadron in the light bomber role. The squadron was equipped with Horsleys, Wallaces and Hinds before becoming a fighter squadron equipped with Gloster Gauntlets on 31st October 1938. By the beginning of World War II, 504 had been re-equipped with Hawker Hurricanes. The squadron's first victory was a Ju88 shot down over France on May 14th 1940 where it had been sent as a BEF reinforcement. After suffering heavy losses in France, 504 was sent back to Wick in the UK and began to build itself back to operational strength. On 5th September 1940 504 flew to Hendon and began intensive operations attacking German formations over London and the South East of England during the Battle of Britain. During 1941, 504 was re-equipped with Mk IIb Hurricanes and then divided. A flight joining No.81 squadron to go to Russian and a new 504 squadron being built up from B flight. 504 squadron saw action throughout World War II, taking part in offensive fighter sweeps over occupied Europe, escorting transport aircraft to Arnhem and bomber escort duties. During January 1945, six pilots were posted to Glosters for conversion to the Meteor, but the war ended in Europe before they could be used in combat. On 16th December 1947 King George VI gave permission for the use of the Royal prefix for all Auxiliary Air Force squadrons. On 12th February 1957 504 squadron Royal Auxiliary Air Force based at RAF Wyneswold was disbanded.  Defending the Line by Stephen Brown  During the long summer of 1940 southern England formed the battle line upon which the future of the free world hung in the balance. Hurricane Mk1s of 504 Squadron power into the dawn sky for the first of what will probably be several scrambles in a typical day during the Battle of Britain. During the course of the war the Hurricane flew in every combat theatre and in virtually every role conceivable for a fighter. Aircraft side view by M A Kinnear  Hawker Hurricane MkI P2725 TM-B.  Aircraft History: The Hawker Hurricane MkI was part of the first production batch of 500 built by Gloster Aircraft  Co. Ltd, Brockworth during 1939/140 under contract number 962371/38/C.23A/ Delivered to 504 squadron, P2725 brought down the first enemy aircraft over London on 15th September 1940, piloted by Flight Sergeant R. T. Holmes. Ammunition exhausted he deliberately rammed a Dornier causing it to crash on Victoria Station, P2725 was badly damaged as a result of this action and Flight Sergeant Holmes had to leave the stricken aircraft by parachute. The Hurricane crashed in the vicinity of Victoria Station. Flight Lieutenant Raymond T Holmes: Born and raised on the Wirral Peninsula, Ray Holmes was the 55th volunteer for the RAFVR on its formation in 1936. As a sergeant pilot he was credited with being the first to bring down an enemy aircraft over London during the Battle of Britain whilst with 504 County of Nottingham Squadron flying Hawker Hurricane P2725. After flying convoy protection duties he was posted to Murmansk with 81 Fighter Squadron, escorting Russian Bombers over Finland. Upon his return to Britain he qualified as a flying instructor and spent two years at the Central Flying School. This was followed by a move to 541 Squadron at Benson, flying PR Spitfires, photographing targets such as Berlin, the Ruhr and Hitler's hideout at Berchtesgaden. At the end of the war he was appointed King's Messenger flying mail for Winston Churchill. Ray was demobilized in October  1945 to return to the Wirral and his pre-war career of journalism.  Motto: "Vindicat in Ventis" ("It Avenges in the Wind").

504 (County of Nottingham) Squadron Royal Auxiliary Air Force: 504 Squadron came into being on the 14th March 1926 based at Hucknell as part of the Special Reserve Squadron in the light bomber role. The squadron was equipped with Horsleys, Wallaces and Hinds before becoming a fighter squadron equipped with Gloster Gauntlets on 31st October 1938. By the beginning of World War II, 504 had been re-equipped with Hawker Hurricanes. The squadron's first victory was a Ju88 shot down over France on May 14th 1940 where it had been sent as a BEF reinforcement. After suffering heavy losses in France, 504 was sent back to Wick in the UK and began to build itself back to operational strength. On 5th September 1940 504 flew to Hendon and began intensive operations attacking German formations over London and the South East of England during the Battle of Britain. During 1941, 504 was re-equipped with Mk IIb Hurricanes and then divided. A flight joining No.81 squadron to go to Russian and a new 504 squadron being built up from B flight. 504 squadron saw action throughout World War II, taking part in offensive fighter sweeps over occupied Europe, escorting transport aircraft to Arnhem and bomber escort duties. During January 1945, six pilots were posted to Glosters for conversion to the Meteor, but the war ended in Europe before they could be used in combat. On 16th December 1947 King George VI gave permission for the use of the Royal prefix for all Auxiliary Air Force squadrons. On 12th February 1957 504 squadron Royal Auxiliary Air Force based at RAF Wyneswold was disbanded.