The following offices, positions and ranks are created, established and designated for the Police Department of the City: Chief of Police, assistant chief, captain, lieutenant, sergeant, detective, patrolman, and policewoman, including all grades and ranks therein as may be designated by the Civil Service Commission. Such offices, positions and ranks shall be filled by appointment in accordance with Chapter 2.12, as provision is made therefor in the budget and compensation ordinances enacted by the City Council, and shall constitute regular full time personnel of the City Police Department. (Ord. 531 § 1, 1970).