Donald Sinclair Margach was a bomb aimer who, in 1943, served on 106 Squadron when it was commanded by Wing Commander Guy Gibson. Donald did not go with Gibson when he formed 617 Squadron, which in May 1943 carried out Operation Chastise, the audacious raid on the dams. In 1944 Donald was flying with 582 Squadron of the Pathfinders when he lost his life. See Donald Margach and Guy Gibson
