Coded Messages

Come to think of it, we all know the CIA is the organization responsible for hands-on international subterfuge, assassinations, and regime change. But if covert activities are their brief, who is in charge of data collection? What is the real intelligence agency of the United States? Brilliant inventions and breakthroughs in the science and the art of intelligence gathering and data encryption/decryption are presented and explained, with illustrations from the US Civil War to World War II and be