line of battle vs military

line of battle and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
line of battle	Yes	No	No	No
military	Yes	Yes	No	No

line of battle (noun)	military (noun)
a line formed by troops or ships prepared to deliver or receive an attack	the military forces of a nation

line of battle (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