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Document, Service Historique de La Defense, Chateau de Vincennes, Paris, France

Historical summary of telegraphy on p143 of Volume II of a report by the EMA or Ecole Militaire d'Administration and the SR or Service des Renseignements, on the study of the Enigma Machine, a cipher machine using complex coding to protect military communications, dated 1931-42, from the collection of the Service Historique de La Defense, at the Chateau de Vincennes, Vincennes, Paris, France. The collection includes documents of the Vichy government detailing spying activities of the French Secret Services on the German Nazi regime. The Centre Historique des Archives at Vincennes forms part of the SHD, which stores the archives of the Ministry of Defence and its armed forces. It was set up by decree in 2005. Picture by Manuel Cohen

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LC_HISTORY_MC_0263.jpg
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© Manuel Cohen
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Historical summary of telegraphy on p143 of Volume II of a report by the EMA or Ecole Militaire d'Administration and the SR or Service des Renseignements, on the study of the Enigma Machine, a cipher machine using complex coding to protect military communications, dated 1931-42, from the collection of the Service Historique de La Defense, at the Chateau de Vincennes, Vincennes, Paris, France. The collection includes documents of the Vichy government detailing spying activities of the French Secret Services on the German Nazi regime. The Centre Historique des Archives at Vincennes forms part of the SHD, which stores the archives of the Ministry of Defence and its armed forces. It was set up by decree in 2005. Picture by Manuel Cohen