Much damaged by the RAF (3)
I believe the answer is:
far
'much' is the definition.
(I've seen this in other clues)
'damaged by the raf' is the wordplay.
'raf' anagrams to 'FAR'.
However, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for far that I've seen before include "A long, long way to go" , "Very much" , "Distant" , "Remote" , "At a great distance way" .)