During WW2 617 Squadron was formed for the specific task of attacking three major dams on the Ruhr in Germany. Were any other Squadrons formed for a single mission and if so do any of them still exist?

618 Squadron was formed in order to launch Upkeep’s smaller brother Highball towards Tirpitz. When the latter was moved, the unit went to Australia, the target this time being Japanese vessels.

The unit never saw action, though some of the crews went on to Mosquito Mk.XVIII ‘Tsetse’ aircraft in Coastal Command, using a 6 lb-er gun against Axis shipping.