The Fire Department shall be divided into as many companies as the Council may deem necessary, each of which shall have a battalion chief and a captain, to be selected in accordance with the rules and regulations of the particular company.  The Fire Department shall also have such paid drivers and employees within the limits of the appropriation for the Fire Department as the City Manager may determine to be necessary for the efficient operation of the department, the maintenance of the alarm system and other equipment, and the inspection of fire hazards, etc., who shall receive such salaries as may be fixed by law and the appropriation.  The appointment, promotion, demotion, tenure of office and removal of all such officers shall be governed by the civil service system, now in effect.
   The City may utilize a volunteer fire department system to supplement the paid Fire Department members.