California Code, Military and Veterans Code - MVC § 254

Enlisted persons may be transferred to or from organizations or units. Noncommissioned officers may be reduced one or more grades upon good cause appearing therefor. In transferring or reducing an enlisted person or noncommissioned officer the procedure laid down in regulations for the National Guard shall be followed.

An order discharging a member of the militia may be vacated by the Adjutant General for good cause; provided, a certificate or other evidence of discharge has not been delivered to the discharged member.