Rogue gets near officer (8)
I believe the answer is:
sergeant
'officer' is the definition.
(I know that sergeant is a type of non-commissioned officer)
'rogue gets near' is the wordplay.
'rogue' indicates anagramming the letters (letters go rogue).
'gets'+'near'='getsnear'
'getsnear' with letters rearranged gives 'SERGEANT'.
(Other definitions for sergeant that I've seen before include "Military rank" , "Military or police officer" , "Copper" , "NCO or police officer ..." , "Troy" .)