combatant vs military

combatant and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
combatant	Yes	Yes	No	No
military	Yes	Yes	No	No

combatant (noun)	military (noun)
someone who fights (or is fighting)	the military forces of a nation

combatant (adjective)	military (adjective)
engaging in or ready for combat	associated with or performed by members of the armed services as contrasted with civilians
	characteristic of or associated with soldiers or the military
	of or relating to the study of the principles of warfare