Battle of Britain , 1940. Foreign fighter squadrons began forming in July 1940. During the late 1930s Fighter Command expanded greatly and replaced its obsolete
biplane squadrons – generally outfitted with
Bristol Bulldog,
Gloster Gauntlet and
Hawker Fury biplane fighters leading up to, and through the period of its founding – with the
Hawker Hurricane and the
Supermarine Spitfire. Fighter Command was tested during the
Battle of Britain in the summer of 1940 when the German
Luftwaffe launched an offensive aimed at attaining air superiority over the
Channel and the UK as a prerequisite to the launch of a seaborne invasion force (codenamed
Operation Sea Lion). Fighter Command was divided into several groups, each defending a different part of the UK.
11 Group took the brunt of the German attack, as it controlled southeast England and
London. It was reinforced by
10 Group, which covered southwest England,
12 Group, which covered the
Midlands and
East Anglia, and
13 Group, which covered the North of England and Scotland.
14 Group was established on 26 June 1940.
60 Group was established to run the
Chain Home radar stations in early 1940. In the end, the Germans failed to attain air superiority, although the RAF had been eating severely into its reserves during the battle, as had the Luftwaffe.
1941 air offensive By May 1941, the squadrons based at all the main fighter airfields operated in wings, under the tactical control of the new post of
wing leader, a survivor of 1940 with the rank of
wing commander. Fighter Command began a campaign to gain air superiority over northwestern France. Short-penetration fighter operations were used to draw the into a war of attrition and keep as many German fighters in the west, particularly after the
Operation Barbarossa, the German attack on the Soviet Union, began in June 1941. Large Spitfire formations were sent out with a few medium bombers to lure the German fighters into combat. The left
Jagdgeschwader 2 (JG 2) and
Jagdgeschwader 26 (JG 26) in western Europe, comprising 180 fighters at most. The advantages enjoyed by Fighter Command during the Battle of Britain were reversed, the short range of the Spitfire becoming a tactical disadvantage and British pilots became
prisoners of war if shot down. Fighter Command claimed 711 fighters shot down but only 236 were lost from all causes, 103 in combat, for a loss of 400 RAF fighters. As 1941 ended, the appearance of the new
Focke-Wulf Fw 190, considerably superior to the
Spitfire Mk V, put the British fighters at a worse disadvantage. The
Blitz of 1940 continued against civilian and industrial targets. Fighter Command night defences improved considerably in the new year; the
Bristol Beaufighter supplanted the
Bristol Blenheim as the principal
night fighter, equipped with improved
aircraft interception radar, and became increasingly effective in
ground-controlled interception (GCI).
1942–45 tipping the wing of a
V-1, which disrupted the missile's automatic pilot during
Operation Crossbow, 1944. The difficult task of slowly grinding down the Germans continued into 1942 and 1943. Squadrons also found themselves on tiring defensive patrols as small formations of Fw 190s flew 'hit and run' nuisance raids along the south coast and the
Hawker Typhoon came into squadron service. On 19 August, during the
Dieppe Raid, the RAF had an opportunity to engage large numbers of aircraft. The Spitfire squadrons (42 with Mark Vs, and four with Mark IXs) flew ground-attack, escort and air-superiority sorties and prevented the from interfering in the ground and sea battle, claiming 106 victories. Postwar analysis showed that the RAF lost 106 aircraft, including 88 fighters and 18 bombers; 29 fighter losses were from flak, one ran out of fuel, two collided and one was a victim of friendly fire. The actual loss was 48 aircraft, 28 being bombers, half of them
Dornier Do 217s from
KG 2. JG 2, lost 14 Fw 190s and eight pilots killed, JG 26 lost six Fw 190s with their pilots. Spitfire losses stood at 70 destroyed and damaged to all causes; the number lost to Fw 190s is unknown. The claimed 61 of the 106 RAF machines lost, which included all types, JG 2 claiming 40 and JG 26 claiming 21. By the autumn of 1942, the arrival of the
United States Army Air Forces (USAAF)
8th Air Force and its daylight bombers added bomber escort to Fighter Command's tasks. Until American
Republic P-47 Thunderbolt fighter groups were operational in May 1943, the command's Spitfires performed a key role in protecting the increasing numbers of
Boeing B-17 Flying Fortresses and
Consolidated B-24 Liberators operating over Occupied Europe. The Spitfire's chronic lack of operational range – not unlike
the Bf 109E's dilemma during the Battle of Britain – meant such protection was limited to the Channel and the European coast. The Spitfire had a range of only . In February 1944, Fighter Command was split into the
Air Defence of Great Britain (ADGB), the former name of Fighter Command, to defend Britain, and the
Second Tactical Air Force, to support ground forces after the invasion of Europe. On 15 July,
No. 14 Group RAF (established 26 June 1940) was disestablished. In 1944 ADGB made the greatest effort in its history during
Operation Overlord, the invasion of France which began on 6 June. RAF and Allied fighter units suppressed the meagre German air opposition and supported ground forces by strafing German positions and transport. Later that year, the final test of ADGB (renamed Fighter Command in October 1944) in the war occurred against the
V-1 flying bomb during
Operation Crossbow. RAF fighters also flew long-range night intruder operations against German airfields and aircraft (e.g. at take-off/landing) at the time the night fighters would be scrambled against
RAF Bomber Command (see
Operation Hydra). In January 1945, Fighter Command included 10, 11, 12 and 13 Groups, plus
38 (Airborne Forces) Group,
60 Group, and
70 (Training) Group. 10 Group was disestablished on 2 May 1945, and 70 Group on 17 July 1945. In 1946, 60 Group was amalgamated with
26 Group to become
90 (Signals) Group and transferred to Transport Command/British Air Force of Occupation. From 1939 to 1945, RAF Fighter Command lost 3,690 killed, 1,215 wounded and 601 POW; 4,790 aircraft were lost. == Royal Observer Corps ==