In early April 1941, after an air raid on Brest by Bomber Command, the had to move out of dry-dock because of an un-exploded bomb. Photo reconnaissance revealed that the ship was in the inner harbour. An estimated 1,000 flak guns of all calibres protected the base and adding complication to the danger was the realisation that "Gneisenau" was only about from a harbour mole, requiring extremely accurate torpedo drops. The aircraft would be forced into a steep banking turn during the escape to avoid rising ground surrounding the harbour. In spite of these dangers 22 Squadron, based at RAF St Eval, was ordered to make a torpedo attack, timed to take place just after dawn on 6 April 1941. It was planned to attack the torpedo nets thought to be protecting the ship, using three Beauforts armed with bombs; another three Beauforts would then attack the ship with torpedoes. Following heavy rain that had drenched the airfield, the bomb-carrying aircraft became bogged down. Because of a sea mist, the other three Beauforts arrived at Brest independently; one, flown by F/O Kenneth Campbell, managed to penetrate the harbour and torpedo "Gneisenau" but was shot down immediately afterwards. Campbell was awarded the VC and his Observer, Sergeant J. P. Scott of Canada, the Distinguished Flying Medal. The other two crew members were Sgts R. W. Hillman and W. Mallis; all were lost.