Month with other ranks for council official (5)
I believe the answer is:
mayor
'council official' is the definition.
(a mayor might be the head of a council)
'month with other ranks' is the wordplay.
'month' becomes 'may' (May is an example).
'with' says to put letters next to each other.
'other ranks' becomes 'or' (military abbreviation).
'may'+'or'='MAYOR'
'for' acts as a link.
(Other definitions for mayor that I've seen before include "Municipal head" , "Town's elected head" , "Local dignitary" , "Town dignitary" , "For example, Henchard" .)