Calling another combatant out to combat, a challenge can be
à plaisance , friendly, or à la guerre, as in war. The challenge was a frequent device for
knights who would call out opponents known to them in war,
tournament , or to settle questions of
honor . During the 15th century, the challenge became a common feature of the
feat of arms , both of the
emprise , where such encounters were held with weapons of war, and similar encounters using arms of peace called the
pas d'armes . 
