Cal. Gov. Code § 19775.5
Any person in recognized military service, whose name appears on a promotional list, or general reemployment list, appointment from which would accord permanent status, and is retained on such list subject to Section 19775.4, shall have his name certified to fill any vacancy which may occur during the period his name is so retained on such list. The appointing power may appoint him to fill the position to take effect upon his reinstatement under the provisions of Sections 19780 and 19782. Any person in recognized military service, whose name appears on a subdivisional or departmental reemployment list and is retained on such list subject to Section 19775.4 shall have his name certified to fill any vacancy which may occur during the period his name is so retained on such list. The appointing power shall appoint him to fill the vacant position to take effect upon his reinstatement under the provisions of Sections 19780 and 19782.
Ca. Gov. Code § 19775.5