Rise up and fight daughter at the back (8)
I believe the answer is:
rearward
'the back' is the definition.
(thesaurus)
'rise up and fight daughter' is the wordplay.
'rise up' becomes 'rear' (as in a horse rearing up).
'and' is a charade indicator (letters next to each other).
'fight' becomes 'war' (warring is a kind of fighting).
'daughter' becomes 'd' (genealogical abbreviation).
'rear'+'war'+'d'='REARWARD'
'at' is the link.
(Other definitions for rearward that I've seen before include "Towards the back" , "Toward the back" .)