No. 13 Group RAF
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No. 13 Group RAF was first formed on 1 April 1918 within No. 3 Area. It was quickly transferred to Midland Area on 8 May of that year. On 18 October 1919 the Group's first existence came to an end when it was disbanded by folding it into No. 3 Group.
As Fighter Command expanded prior to World War II, it was seen that a new Group was needed to command the air defences of Scotland, Northern Ireland, and the north of England. 13 Group was duly reformed on 15 March 1939. During the initial stages of WWII, No. 13 Group was Commanded by Air Vice Marshal Richard Saul.
As well as guarding the north during the Battle of Britain, 13 Group also provided reserve squadrons and pilots to the more beleaguered 11 Group, and provided quieter bases for squadrons to recuperate from operations.
During the Battle of Britain, the Germans had faulty intelligence indicating that 13 Group had next to no fighters in operation (they believed that the only reason why 11 Group was still holding out was that 13 Group had been sending them down their available aircraft), so they had thought that any attacks made on Scotland would not face any serious resistance. This proved to be a costly mistake for the Luftwaffe, as their bombers were intercepted by a large number of fighters. The bombers could not be escorted all the way to Scotland from Occupied Europe because of the short range of the Messerschmitt 109, so the attacking bombers proved to be fodder for Saul's Spitfire and Hurricane squadrons.
After the Battle of Britain, 13 Group squadrons helped RAF Coastal Command in patrolling for U-boats and providing air cover for convoys. New pilots would usually find themselves posted to a 13 Group squadron initially so as to gain experience with lesser risk of getting shot down.
After the war, the Group was disbanded on 20 May 1946. However, nine years later it was reformed. It finally disbanded on 31 December 1961 when it was redesignated No. 11 Group.