Chivalry
Robert S. P. Jones
Abstract Chivalry is that which pertains to the chevalier or knight, mounted martial and social elite of medieval western central Europe. It can be used as a collective noun encompassing entire caste, but more normally applied Christian warrior ethos it subscribed. Although principally militaristic, chivalry presented ideals behavior conduct both on off battlefield, was an ideology encompassed all aspects its adherents' lives.
The Encyclopedia of War