§ 152. Promotion. The town board may determine that promotions of
officers and members of such police department shall be made by the town
board on the basis of seniority, meritorious police service and superior
capacity as shown by competitive examination, such examination to be
conducted by the appropriate civil service commission. Individual acts
of personal bravery may be treated as an element of meritorious service
in such examination. The town board shall keep a complete service record
of each member of such police department in accordance with the rules of
the appropriate civil service commission and shall transmit the record
of each candidate for promotion to such civil service commission in
advance of such examination.