RAF Fighter Command
During the Second World War, Britain's Royal Air Force was divided into a number of functional and geographic commands in line with an organisation that had first been implemented in 1936. Fighter Command was primarily responsible for the defence of Great Britain and at its height in mid-1941 consisted of 79 squadrons organised into five groups. 9 Group was responsible for the western Midlands and northern Wales, 10 for south-western England and southern Wales, 11 Group for London and England's south-east, 12 for the eastern Midlands, 13 for northern England and southern Scotland, and 14 Group for northern Scotland and the Orkney and Shetland islands. By this time the command was also responsible for maintaining daylight operations over western France and the Low Countries. In November 1943 many Fighter Command squadrons were transferred to the 2nd Tactical Air Force to provide close air support for the British 21st Army Group in the upcoming invasion of France. Fighter Command retained only 43 squadrons and was renamed "Air Defence of Great Britain". It was a short-lived name change reversed in October 1944. Its role for the rest of the war was relatively minor, although it did play a significant part in combating V-1 flying bomb attacks during mid-1944.
Five RAAF "Article XV" squadrons operated with Fighter Command, as well as numerous Australian personnel posted to RAF squadrons. 191 RAAF personnel were killed while serving with Fighter Command.