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Napoleonic Wars
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- 1Cryptographer decodes Napoleonic war letter unread for 217 years▼Breaking the Cipher of the Napoleonic war briefing, unread for 217 years
A coded military dispatch sent to French general Auguste de Marmont during the Napoleonic Wars has finally been deciphered, more than two centuries after it was written. The decryption reveals the contents of an imperial war briefing that had remained sealed since 1808, offering a rare glimpse into how Napoleon's commanders encoded battlefield instructions and intelligence.