
AI Decodes 1809 Napoleonic Cipher in Six Hours, Revealing Lost Military Briefing
Carter Church, an AI engineer at SentinelOne, used OpenAI’s GPT-6 Astra to decode a 217-year-old encrypted letter from 1809. The AI transcribed 1,300 symbols from a scanned image in six hours, revealing a military briefing sent to General Auguste de Marmont. The decoded text details troop positions and completes a sentence from Napoleon’s memoir, marking a significant application of AI in historical research.













