The National Archive has launched a featuring, for the first time, logbooks of the raid, air reconnaissance photos of the successfully breached dams and drawings for the "bouncing bomb".
It is also running a competition to win a helicopter flight along the training route of the Dambusters, for users who can answer a question about which planes were used in the raid. They can also sign up for the National Archives' newsletter.
The Dambusters raid is one of the most famous British missions of World War II, and has been made into a memorable movie starring Michael Redgrave and featuring composer Eric Coates' rousing 'Dambusters March'. The raid took place on the night of May 16 1943, when 19 modified Lancaster bombers attacked dams in Germany to cut off water supplies to arms manufacturers.
The National Archives was created on April 2 this year when the Public Record office and the Historic Manuscripts Commission came together to form a new organisation. It houses 1,000 years of documents, including sources for family history research. Anyone over the age of 14 can become a reader and access its collections.
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