Dambusters raid. John Sweetman. 2002.

Operation Chastise - the Adam ushers Raid, as it became known - undertaken by 19 Lancaster of 617 Squadron on the night of May 16 1943, was the most audacious bombing raid of the Second World War. For the loss of 11 aircraft, the Mohne and Eder dams in Germany’s industrial heartland were breached, and a famous if controversial victory won.