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. 342 Squadron RAF their sister squadron No. 88 Squadron to RAF Hartford Bridge. The squadron flew low-level bombing and strafing missions (nicknamed "hedgehopping"), over France and the Netherlands, in particular against V-1 bases in Northern France and selected sites connected with the preparation for D-Day. In October 1944 the squadron relocated to France from where it continued to support the Allied advance. In March/April 1945 the Bostons were replaced by B-25 Mitchells and the squadron relocated to the Netherlands. The squadron was transferred from RAF control to the French Air Force ( "Armée de l'Air" ) on 2 December 1945. No. 342 Squadron