military officer vs military

military officer and military both are nouns.

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

military officer (noun)	military (noun)
any person in the armed services who holds a position of authority or command	the military forces of a nation

military officer (adjective)	military (adjective)
	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