Enchanted soldier wearing coat (5)
I believe the answer is:
magic
'enchanted' is the definition.
Both the answer and definition are adjectives. Maybe you can see an association between them that I don't see?
'soldier wearing coat' is the wordplay.
'soldier' becomes 'GI' (GI can mean a US soldier).
'wearing' means one lot of letters goes inside another.
'coat' becomes 'mac' (mac is a kind of coat).
'gi' placed inside 'mac' is 'MAGIC'.
Can you help me to learn more?
(Other definitions for magic that I've seen before include "Necromancy" , "Great" , "Supernatural power" , "Sprinkling of fairy dust" , "'Charms, spells, illusions (5)'" .)