What lover of old battles does to avoid odium of bad documentaries (2-6)
I believe the answer is:
re-enacts
'avoid odium of bad documentaries' is the definition.
I can't tell whether this defines the answer.
'what lover of old battles does' is the wordplay.
I cannot really see how this works, but
'does' could be 'acts' (I've seen this before) and 'acts' is present in the answer.
The remaining letters 'reen' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'to' acts as a link.
Can you help me to learn more?
(Another definition for re-enacts that I've seen is " Performs again using snare etc".)