Old uncle injured in battle (8)
I believe the answer is:
culloden
'battle' is the definition.
(I've seen this before)
'old uncle injured' is the wordplay.
'injured' indicates an anagram.
'old'+'uncle'='olduncle'
'olduncle' is an anagram of 'CULLODEN'.
'in' is the link.
(Other definitions for culloden that I've seen before include "Seventeen fourty six Jacobite defeat" , "Scottish moor where Bonnie Prince Charlie was defeated in 1746" , "Battle at which English defeated Bonny Prince Charlie" , "1746 battle" , "site of battle" .)