Soldier very bitter over identical issue getting high (11)
I believe the answer is:
anticyclone
'high' is the definition.
(thesaurus)
'soldier very bitter over identical issue' is the wordplay.
'soldier' becomes 'ant' (I've seen this before).
'very bitter' becomes 'icy'.
'over' is a charade indicator (letters next to each other).
'identical issue' becomes 'clone' (issue or offspring cloned from a parent).
'ant'+'icy'+'clone'='ANTICYCLONE'
'getting' acts as a link.
(Other definitions for anticyclone that I've seen before include "Swirl in the atmosphere" , "Circulating weather system" , "High-pressure weather system" .)