No. 617 Squadron RAF No. 617 Squadron RAF Number 617 Squadron is a Royal Air Force aircraft squadron, based at RAF Marham in Norfolk. It is commonly known as the "Dambusters", for its actions during Operation Chastise against German dams during the Second World War. In the early 21st century it operated the Tornado GR4 in the ground attack and reconnaissance role until being disbanded in the spring of 2014. The squadron reformed on 17 April 2018, and was equipped at RAF Marham during summer 2018 with the F-35 Lightning II, becoming the UK's first squadron with this advanced V/STOL type. According to the
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