Courteous chap, a non-military type (8)
I believe the answer is:
civilian
'a non-military type' is the definition.
I can't tell whether this defines the answer.
'courteous chap' is the wordplay.
'courteous' becomes 'civil' (I've seen this in another clue).
'chap' becomes 'Ian' (man's name).
'civil'+'ian'='CIVILIAN'
Can you help me to learn more?
(Other definitions for civilian that I've seen before include "Forces apart any person" , "Member of a country" , "Citizen (non-military)" , "One who is not a member of the forces of law and order." , "out of service" .)