🔍The British code breakers were in a state of ignorance about the enigma machine until six weeks before the outbreak of World War II.
💰Hans Tilo Schmidt, a German ex-serviceman, sold enigma machine documents to the French, providing valuable information for code breaking.
🌍Collaboration between the British, French, and Polish code breakers was crucial in the successful breaking of the enigma cipher.
🔐The French intelligence services had a process for dealing with spies selling code books, and they vetted individuals like Schmidt.
📚The enigma machine documents acquired by the French were user manuals, but they lacked detailed engineering drawings of the machine's internals.