Upon the appointment of any person as a member of the police department, it shall be the duty of the city secretary to issue him a certificate of appointment, signed by the mayor and attested by the city secretary, and such person shall, before entering upon the duties of his office, take and subscribe the official oath prescribed in the constitution of this state and in the city charter before some officer authorized to administer oaths, which oath shall be endorsed upon the certificate of appointment, and such certificate filed in the office of the city secretary.
(1986 Code, ch. 8, sec. 5:C)