How to maintain an accurate tally of fortified towers? (4,5)
I believe the answer is:
keep count
'fortified towers?' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'how to maintain an accurate tally' is the wordplay.
I cannot really see how this works, but
'maintain' could be 'keep' (synonyms) and 'keep' is found within the answer.
'tally' could be 'count' (synonyms) and 'count' is present in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for keep count that I've seen before include "score" , "Check the gate perhaps" .)