With cunning and courage the japanese warlord Tokugawa Ieyasu managed to unify Japan after 150 years of civil war. With cunning and courage the japanese warlord Tokugawa Ieyasu managed to unify Japan after 150 years of civil war. With cunning and courage the japanese warlord Tokugawa Ieyasu managed to unify Japan after 150 years of civil war. With cunning and courage the japanese warlord Tokugawa Ieyasu managed to unify Japan after 150 years of civil war.