The marshal is authorized and required to make all needful regulations not inconsistent with the ordinances of the city or general laws for the government and control of the police department; and the marshal must report to the mayor any violations of such rules or the ordinances by any policeman. The marshal may, by and with the advice and consent of the mayor, appoint special policemen on holidays or such other times as in his judgment it becomes necessary. (Prior code § 14-7)