British codebreakers show Eisenhower letter on their success

British codebreakers cracked Nazi Germany's encrypted secrets but did such a good job of keeping silent that their work was nearly lost to history.
Now a letter from Gen. Dwight D. Eisenhower is helping to underscore the importance of Bletchley Park, the once classified home of the World War II codebreakers. The letter, unveiled for the general public today at the historic site, offers a heartfelt tribute to the codebreakers, who labored in blacked-out rooms for years to crack the Enigma code and beat the Nazis.
Eisenhower wrote to Stewart Menzies, the wartime chief of the Secret Intelligence Service, in 1945 describing the intelligence as "priceless." The letter hung on the wall of the office of John Scarlett, the head of the British intelligence agency MI6, from 2004 until 2009.