Okla. Stat. tit. 44, § 2406
In the state military forces not in federal service, no sentence of dismissal, bad conduct discharge or dishonorable discharge may be executed until it is approved by the Governor.
Laws 1963, SB 277, c. 148, § 406, emerg. eff. June 6, 1963; Amended by Laws 1990, SB 537, c. 98, § 4, eff. September 1, 1990.