bushido

‖n. [ Jap. bu military + shi knight + dō way, doctrine, principle. ] The unwritten code of moral principles regulating the actions of the Japanese knighthood, or Samurai; the chivalry of Japan. [ 1913 Webster ]

Unformulated, Bushido was and still is the animating spirit, the motor force of our country. Inazo Nitobé. [ Webster 1913 Suppl. ]