detail vs military group

detail and military group both are nouns.

Word	Noun	Adjective	Verb	Adverb
detail	Yes	No	Yes	No
military group	Yes	No	No	No

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

Other hypernyms of detail include force, military force, military unit.

detail (noun)	military group (noun)
an isolated fact that is considered separately from the whole	a unit that is part of some military service
extended treatment of particulars
a temporary military unit
a crew of workers selected for a particular task
a small part that can be considered separately from the whole

detail (verb)	military group (verb)
assign to a specific task
provide details for