Every male person above the age of 18 years who shall be present at a fire, shall be subject to the orders of the officer in command at such fire and shall render all assistance in his or her power, and in such manner as he or she may be directed in the extinguishment of the fire, and in the removal of and protection of property, provided no person shall be bound to obey any such officer, unless such officer's official character shall be made known to such person. It shall be lawful for any Fire Chief or any assistant or other person in command of the Fire Department to require such person above the age of 18 years with a motor vehicle that any such person may own or control to assist in hauling or conveying apparatus to the place of the fire.
(`95 Code, § 33.19)