
AI Decodes 217-Year-Old Napoleonic Cipher in Six Hours
Carter Church used OpenAI's GPT-6 Astra to decode a 1809 cipher letter sent to Napoleon's marshal Auguste de Marmont. The AI transcribed 1,300 symbols from a 1969 journal scan in six hours, revealing military troop movements before the Austrian invasion. Church released the key and script for verification, though some historical details remain debated.











