military machine vs personnel

military machine and personnel both are nouns.

Word	Noun	Adjective	Verb	Adverb
military machine	Yes	No	No	No
personnel	Yes	No	No	No

As nouns, personnel is a hypernym of military machine; that is, personnel is a word with a broader meaning than military machine:

Other hypernyms of military machine include force.

military machine (noun)	personnel (noun)
the military forces of a nation	group of people willing to obey orders
	the department responsible for hiring and training and placing employees and for setting policies for personnel management