In and out of wartime, spies play an essential role in information gathering for their nations (and, on occasion, as double-spies for other nations). The spies listed here are the most famous in history. 1. Mata Hari Born: 1876; Died: 1917 Mata Hari in a dancing costume Spied For: Germany (and Possibly France) Mata Hari … Continue reading Top 10 Famous Spies