military vs rank and file

military and rank and file both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
rank and file	Yes	No	No	No

military (noun)	rank and file (noun)
the military forces of a nation	the ordinary members of an organization (such as the enlisted soldiers of an army)
	people who constitute the main body of any group

military (adjective)	rank and file (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