Soldier not belonging to the state (7)
I believe the answer is:
private
This clue is a double definition.
'soldier' is the first definition.
(private is a type of soldier)
'not belonging to the state' is the second definition.
(eg private sector rather than public sector)
(Other definitions for private that I've seen before include "Secret - serviceman" , "Lowest rank in the army" , "Army three Dn" , "Whispered" , "See 16" .)