Falut, AndréDesenclos, CamillePierrot, Cécile2026-06-152026-06-152026-06-221736- 6305https://hdl.handle.net/10062/122089After the installation of Pétain’s government in Vichy, telegrams sent to its administration were received by a central telegraph station, which retained copies of the messages. A large proportion of the surviving messages, now kept at the French National Archives, is encrypted. This paper provides initial observations on these messages and their context, focusing on the years preceding the full occupation of mainland FranceenAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttps://creativecommons.org/licenses/by/4.0/telegraphyVichy FranceWWIIadministrative cryptographyArticle