§ 31.110  PERSONNEL; RANK; SPECIAL POLICE OFFICERS.
   (A)   Composition; ranks and designations of members. The Police Department shall consist of the Chief of Police and the other personnel as may, from time to time, be authorized by the Board of Alderpersons. Personnel subordinate to the Chief of Police shall have the ranks or position designations as may, from time to time, be authorized by the Board of Alderpersons.
(Prior Code, § 11-1)
   (B)   To appoint special police officers; special  police officers generally. On public occasions, or upon the existence of conditions under which, in the sound discretion of the Mayor, it appears necessary to augment the authorized strength of the Police Department to assure maintenance of the public peace and order, or to assure that normal Police Department functions will be performed efficiently under abnormal conditions, the Mayor may appoint or authorize the appointment of special police officers, and he or she may designate their duties and the localities in which they shall perform their duties. Special police officers so appointed shall be under command of the Chief of Police and other police officers superior to them in rank.
(Prior Code, § 11-3)