During WWII, Alan Turing designed the Bombe at Bletchley Park to break Germany's Enigma cipher machine. This electromechanical device simulated thousands of Enigma settings, using known plaintext "cribs" to deduce daily keys. It decrypted vital Nazi communications, giving Allies a strategic edge and shortening the war by years. #wwii #historyfacts #epichistory | Epic History TV

For two months, Elizebeth Friedman worked by hand to crack the codes generated by the German Enigma machine. Until one day she discovered a weakness. Watch an encore of THE CODEBREAKER Tue Dec 28 at 9/8c → pbs.org/wgbh/americanexperience/films/codebreaker | American Experience | PBS

Day after day, Elizebeth Friedman sparred with paper and pencil against the codes generated by the German Enigma machine. Until one day she found a chink in its armor. Tune in or stream THE CODEBREAKER Mon Jan 11 on PBS → pbs.org/wgbh/americanexperience/films/codebreaker | American Experience | PBS