Espionage is an ancient practice of intelligence gathering that has been used since the dawn of time. In Ancient Rome, for example, plain-clothes military scouts were known as “speculatores”, as they were infiltrating enemy territories to gather more information.
Also, in Tudor England, elite “spymasters” were using networks of informers in order to defend the interests of the crown. Espionage developed even further in the 20th century, as new technologies and global conflicts started to appear, which led to even more complex and globally influential spies.
Many intelligence organizations throughout World War One, World War Two, and the Cold War assigned elite secret agents to gather all the needed intel and gain an advantage in the conflicts. So, this being said, let’s find out more about 8 of the most notorious spies in history: