"Yeah, it would be humiliating, having to lie there while the better man refuses to spill your blood. Mercy is the sign of a great man. (shallow stab) I guess I'm just a good man. (another shallow stab) Well, I'm all right."
— Malcolm Reynolds from the episode "Shindig," Firefly
Nobby had long ago been told about fighting fair and not striking a fallen opponent, and had then given some creative thought to how these rules applied to someone four feet tall with the muscle tone of an elastic band.
Charlie: You know, Scotland has its own martial arts. Yeah, it's called "Fuk-Yu!" It's mostly just head butting and then kicking people when they're on the ground.
Soldiers collect and care for the wounded, whether friend or foe.
Soldiers do not attack medical personnel, facilities, or equipment.
—from U.S. Army Regulation 350-1, a/k/a "The Soldier's Rules"