Non-combatant (8)
I believe the answer is:
civilian
'non-combatant' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for civilian that I've seen before include "Member of a country" , "Citizen (non-military)" , "Forces apart any person" , "One who is not a member of the forces of law and order." , "Layman found in a civil way" .)