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File:Poland Bydgoszcz Rejewski monument.jpg|A memorial in [[Bydgoszcz]], Poland, to [[Marian Rejewski]], the mathematician who, in 1932, first broke Enigma and, in July 1939, helped educate the French and British about Polish methods of Enigma decryption

File:Poland Bydgoszcz Rejewski monument.jpg|A memorial in [[Bydgoszcz]], Poland, to [[Marian Rejewski]], the mathematician who, in 1932, first broke Enigma and, in July 1939, helped educate the French and British about Polish methods of Enigma decryption

File:Bundesarchiv Bild 183-2007-0705-502, Chiffriermaschine "Enigma".jpg|*For documentary purposes the German Federal Archive often retained the original image captions, which may be erroneous, biased, obsolete or politically extreme. Prop.-Kp. z.b.V.Film-Nr. 2865*Bildberichter: Walther*Text: Strache*Ort: Hamburg*Datum 10.12.[1943]*Die Hände einer Luftnachrichtenhelferin bei der Arbeit

File:Bundesarchiv Bild 183-2007-0705-502, Chiffriermaschine "Enigma".jpg|*For documentary purposes the German Federal Archive often retained the original image captions, which may be erroneous, biased, obsolete or politically extreme.  

File:Enigma-action.svg|The scrambling action of Enigma's rotors is shown for two consecutive letters with the right-hand rotor moving one position between them.

File:Enigma-action.svg|The scrambling action of Enigma's rotors is shown for two consecutive letters with the right-hand rotor moving one position between them.