Tale of Mosquito squadron assigned to knock out Nazi rocket plant. Perhaps never scales the lofty heights of The Dambusters or The Battle of Britain, but a good solid entry in the WWII movies of the 60s. Ron Goodwin's music is the star, you'll be flying round the living room whistling it.
Trivia: George Lucas closely followed the final attack sequence of this film for the Rebel attack on the Death Star in Star Wars Ep. IV: A New Hope (1977). So there is a nice little bit of irony in that the leader of the Rebel attack appears in this film!