Mo. Rev. Stat. § 84.560
For the purposes of sections 84.350 to 84.860* all police officers, not including civilian employees and other than the chief, shall be assigned one of the following ranks: Lieutenant colonel, major, captain, sergeant, detective, or patrolman. Lieutenant colonels shall not exceed five in number, and other titles or designations for police officers may be used but they shall be equivalent in rank and salary to the ranks herein specified.
(RSMo 1939 § 7657, A.L. 1943 p. 727 § 7659, A.L. 1947 v. I p. 407, A.L. 1953 p. 304, A.L. 1958 2d Ex. Sess. p. 152, A.L. 1969 p. 149, A.L. 1984 S.B. 431)
Prior revision: 1929 § 7524
*The figure "84.460" appears in original rolls, but is an apparent typographical error.