Combatant

A combatant is someone who takes a direct part in the hostilities of an armed conflict. If a combatant follows the law of war, then they are considered a privileged combatant, and upon capture they qualify as a prisoner of war under the Third Geneva Convention (GCIII). An unprivileged combatant is someone, such as a mercenary, who takes a direct part in the hostilities but who upon capture does not qualify for prisoner of war status.