Sun Tzu is a honorific title bestowed upon Sūn Wu (c. 544-496 BC), the author of The Art of War, an immensely influential ancient Chinese book on military strategy.

He is also one of the earliest realists in international relations theory. In the author's name, Sūn Wu, the character wu, meaning "military", is the same as the character in wu shu, or martial art. Sun Wu also has a courtesy name, Chang Qing (Cháng Qīng).

Niccolò di Bernardo dei Machiavelli (3 May 1469 - 21 June 1527) was an Italian philosopher, humanist, and writer based in Florence during the Renaissance.

He is one of the main founders of modern political science. He was a diplomat, political philosopher, playwright, and a civil servant of the Florentine Republic. He also wrote comedies, carnival songs, poetry, and some of the most well-known personal correspondence in the Italian language.

Miyamoto Musashi, who lived in Japan in the 1600s, was an undefeated dueler, a masterless samurai, and an independent teacher.

He spent the last decades of his life refining and teaching his military science.