On the 16th May 1943, 617 Squadron took off on its now famous bombing raid of the Möhne and Eder dams in the Ruhr valley using the Barns Wallace designed bouncing bombs.
16-17th May 1943 Wing Commander Guy Gibson led 617 squadron on the operation codenamed Chastise.
A fantastic resource on the RAF museum website
RAF sunset ceremony
17th May 1943 Contact