Bushido refers not only to martial rectitude,  but to personal rectitude: Rectitude or Justice,

Bushido refers not only to martial rectitude,  but to personal rectitude: Rectitude or Justice,  is the strongest virtue of Bushido. A well-known samurai defines it this way: ‘Rectitude is one’s power to decide upon a course of conduct in accordance with reason,  without wavering; to die when to die is right,  to strike when to strike is right.’

Another speaks of it in the following terms: ‘Rectitude is the bone that gives firmness and stature. Without bones the head cannot rest on top of the spine,  nor hands move nor feet stand. So without Rectitude neither talent nor learning can make the human frame into a samurai.’