Early 15th-century Italy was a caldron of warfare from which mercenaries like Bartolomeo Colleoni could make a name and a fortune. Below is a 1432 battle between Florentines and Sienese.

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Bartolomeo Colleoni’s Art of War

By Jonathan North

Bartolomeo Colleoni was a Renaissance success story. A simple mercenary, he rose from obscurity to the most important position on the Italian peninsula: commander-in-chief of the armies of Venice. Read more

Japanese warships steam into Port Arthur, Manchuria, bombarding Russian defenses and ships. Sidney Reilly purportedly sold Japanese information about the port when he lived there just before the war.

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The Mysterious Sidney Reilly

by Vince Hawkins

On the evening of November 5, 1925, Prisoner #73 was taken from his cell in the infamous Lubyanka Prison and driven to a woods in the Sokolniki district outside Moscow. Read more

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The Scholarly Spies

By Tim Miller

Early in June 1940, refugees from northern France and the low Countries who had flooded Paris in May fled with the residents of the city as the German advance neared. Read more