[Machine Translation] During the Warring States period, when the warlords were divided into groups, Nobunaga Oda, Hideyoshi Toyotomi, and Ieyasu Tokugawa succeeded in unifying the nation by defeating a host of rival warlords. How did these warlords achieve military and political victory? This book approaches the essence of war and governance by revealing the military innovations achieved by these three men. Specifically, the innovations of Oda's army, what was more noteworthy than guns at the Battle of Nagashino, the system that enabled Hideyoshi's strange plans and large army movements, why Hideyoshi valued deskilling, what generals tormented Ieyasu to the point of reducing his sexual desire, Ieyasu's plan to defend the shogunate.... Etc. How did the Sengoku period develop and end? Here are the answers.