8. Tokugawa Ieyasu of Japan
Tokugawa Ieyasu, the founder of the Tokugawa Shogunate, recognized the importance of intelligence and surveillance in maintaining control over Japan. He employed a network of spies and secret agents known as “onmitsu” to monitor the activities of feudal lords (daimyō) and suppress potential rebellions. These agents operated covertly, gathering information and ensuring the stability of the shogunate. The legacy of these secret agents, often depicted as ninjas, endures in popular culture, reflecting their significant role in Japanese history (ninshidan.or.jp).
