military vs high command

military and high command both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
high command	Yes	No	No	No

military (noun)	high command (noun)
the military forces of a nation	the highest leaders in an organization (e.g. the commander-in-chief and senior officers of the military)

military (adjective)	high command (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