combatant
noun
[ ˈkɒmbət(ə)nt ]
• a person or nation engaged in fighting during a war.
• "in the long Russo-Swedish conflict, both combatants endured terrible sacrifices"
combatant
adjective
• engaged in fighting during a war.
• "all the combatant armies went to war with machine guns"
Similar:
warring,
at war,
opposing,
contending,
belligerent,
combating,
fighting,
battling,
conflicting,
clashing,
Origin:
late Middle English (as an adjective used in heraldry to describe two lions facing one another with raised forepaws): from Old French, present participle of combatre ‘to fight’ (see combat).