Dead men chopped and changed (7)
I believe the answer is:
amended
'changed' is the definition.
(amending is a kind of changing)
'dead men chopped' is the wordplay.
'chopped' indicates an anagram (letters chopped or smashed up).
'dead'+'men'='deadmen'
'deadmen' is an anagram of 'AMENDED'.
'and' acts as a link.
(Other definitions for amended that I've seen before include "Edited" , "Correct, improve" , "Corrected" , "changed" , "Revised or altered" .)