The Art of War examinations. During the Sengoku period (c. 1467–1568), the Japanese "daimyō" named Takeda Shingen (1521–1573) is said to have become almost invincible in all battles without relying on guns, because he studied "The Art of War". The book even gave him the inspiration for his famous battle standard "Fūrinkazan" (Wind, Forest, Fire and Mountain), meaning fast as the wind, silent as a forest, ferocious as fire and immovable as a mountain. The translator Samuel B. Griffith offers a chapter on "Sun Tzu and Mao Tse-Tung" where "The Art of War" is cited as influencing Mao's "On Guerrilla Warfare", "On the Protracted
Sun Tzu most of the notable figures from the Spring and Autumn period. The name "Sun Wu" () does not appear in any text prior to the "Shiji", and may have been a made-up descriptive cognomen meaning "the fugitive warrior": the surname "Sun" can be glossed as the related term "fugitive" ("xùn" ), while "Wu" is the ancient Chinese virtue of "martial, valiant" ("wǔ" ), which corresponds to Sun Tzu's role as the hero's "doppelgänger" in the story of Wu Zixu. The only historical battle attributed to Sun Tzu, the Battle of Boju, has no record of him fighting in that battle.