A military outfit (4)
I believe the answer is:
unit
This clue could be a double definition.
'a military' is the first definition.
The answer and definition can be both groups as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'outfit' is the second definition.
(thesaurus)
Can you help me to learn more?
(Other definitions for unit that I've seen before include "Single item; one" , "Single thing or person" , "A single self-contained item" , "Single element; one" , "Kitchen element?" .)