In a world where humanity has lost all technology and returned to a medeival like setting, how would a modern chivalry work?

In this world, there is no gun or modern technology. Humans live in a world similar to the medieval time period, but with modern humans. Knights would be modern people that are trained to fight and are chivalrous and honorable. A blacksmith is someone that works with metal, and armorers are specialized blacksmiths that make armor. <br><br>A lord's personal guard would be his "knights" who would be the most skilled warriors in the land. Knights would be the most skilled and well trained warriors in the land. They would be expected to be honorable, chivalrous, and to protect the innocent. <br><br>Chivalry is not just about fighting, it's about treating people with respect and honor. Knights would protect the weak, be courteous to everyone, especially the ladies, be loyal, protect the land, and fight honorably. <br><br>Knights would be sworn to defend their lord, but not their land. This is because knights do not see themselves as an extension of their lord or the state, but rather as the defenders of the innocent. <br><br>The land is the property of the lord, and knights would not fight to take land from others, but would defend the land from invasion. <br><br>Knights would not be used to oppress others or to crush a rebellion, but to defend the innocent. <br><br>Knights are the protectors of the weak, not the tools of the state.