A battle for the chair (5)
I believe the answer is:
sedan
I believe this clue is a double definition.
'a battle' is the first definition.
(I've seen this before)
'chair' is the second definition.
(sedan chair is a type of chair)
'for the' acts as a link.
(Other definitions for sedan that I've seen before include "Once a mobile chair for Danes" , "Saloon car in America" , "Old carrier chair for Danes" , "Palanquin; car" , "Four-door car" .)