The Enigma coding machine, Bletchley Park, Buckinghamshire, England -Ian Waldie/Getty Images ©

The Enigma coding machine, Bletchley Park, Buckinghamshire, England -Ian Waldie/Getty Images ©

The Enigma coding machine, Bletchley Park, Buckinghamshire, England -Ian Waldie/Getty Images ©

The Enigma coding machine, Bletchley Park, Buckinghamshire, England -Ian Waldie/Getty Images ©