Japanese Art of War. Understanding Strategy

The book of the famous scientist-orientalist Thomas Clery is devoted to the comprehension of Japanese art of war, the art of the strategy.
What is the essence of military principles and military culture, over the century and up to our days of the decisive life of Japan? Is there a veil of mystery that covers them, by itself the military principle, the admission of the strategy? How did Shinto, Taoism and Zen-Buddhism affect the formation of the Japanese art of war? How much Bouusido is through a strategy? What in the Japanese art of the war is borrowed from China, and what is inherent only to him? These and many other questions ask the author and is trying to answer them, based on the writings of the Yagy Munanory, Takuana Soho, Miyamoto Musasi