Introduction by Sato Hiroaki Long considered a classic of tactical wisdom, this book is an extraordinary synthesis of the ideas and experiences of three swordsmen: Hidetsuna, Muneyoshi and Munenori. During their lifetime in the 16th and 17th centuries they witnessed historic events which transformed Japan from a feudal state at war to a stable and powerful shogunate. At its simplest level a guide to swordsmanship but also a profound philosophical and psychological guide to strategy. Illustrated.