Memorial of a confused battle? (6)
I believe the answer is:
tablet
'memorial' is the definition.
(thesaurus)
'a confused battle?' is the wordplay.
'a confused' is an anagram indicator.
'battle' is an anagram of 'TABLET'.
'of' acts as a link.
(Other definitions for tablet that I've seen before include "Medicine - flat slab - computer" , "A small pill or an inscribed panel on wall" , "Pill; writing pad" , "Let bat provide a pill" , "Pill; computer" .)