Noah Webster
Combatant
COMBATANT, adjective Contending; disposed to contend.
COMBATANT, noun
1. A person who combats; any person who fights with another, or in an army, or fleet.
2. A duellist; one who fights or contends in battle, for the decision of a private quarrel or difference; a champion.
3. A person who contends with another in argument, or controversy.