No. 5 Group RAF effective squadrons of Bomber Command, personified by No 617 Squadron the "Dambusters", formed from 5 Group aircrew in March 1943. Most of the group's main airfields were around Lincoln, including RAF Scampton. By the end of the war the group had grown to 15 squadrons. The group was noted for its high accuracy bombing, being involved the sinking of the "Tirpitz" in November 1944 and the shattering of the strategic Bielefeld railway viaduct in March 1945. The Group introduced new weapons operationally, including Barnes Wallis's "bouncing" and his Tallboy and Grand Slam "earthquake" bombs. The group was disbanded on 15
No. 29 Squadron RAF brewers' mark for "extra strong", frequently applied to kegs of beer, and that it is only a coincidence that this resembles the numeral for "29" (XXIX). It should be noted that the use of Roman numerals for numbering RAF units is a relatively modern development and it was certainly not the practice in the RAF in the 1920s. Nor, so far as it is known, has 29 squadron ever been officially referred to as "XXX squadron" – or as "XXIX squadron". No. 29 Squadron RAF No. 29 Squadron of the Royal Air Force was first raised as a unit of