Royal Navy boards U-110 and seizes a German Enigma machine with its codebooks
On May 9, 1941, British warships forced German submarine U-110 to the surface and seized the most closely guarded secret of the Nazi war machine—an Enigma cipher device and its codebooks. This capture gave Allied codebreakers at Bletchley Park the keys they desperately needed to crack German naval communications. The intelligence bonanza that followed, codenamed Ultra, shortened the war by years and saved countless lives, yet remained one of the most closely held secrets until the 1970s…
