military police vs personnel

military police and personnel both are nouns.

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

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

military police: a military corps that enforces discipline and guards prisoners
personnel: group of people willing to obey orders

Other hypernyms of military police include force.

military police (noun)	personnel (noun)
a military corps that enforces discipline and guards prisoners	group of people willing to obey orders
	the department responsible for hiring and training and placing employees and for setting policies for personnel management