Cal. Mil. & Vet. Code § 450.1
(b) Subject to subdivision (a), any commanding officer may, in addition to or in lieu of admonition or reprimand, impose one or more of the following disciplinary punishments for minor offenses without the intervention of a court-martial:
(1) Upon officers of his or her command:
(B) If imposed by an officer who under the Uniform Code of Military Justice would exercise general court-martial jurisdiction or an officer of general rank in command:
(2) Upon other personnel of his or her command:
(G) If imposed by an officer of the grade of major or above:
(vi) Detention of not more than 15 days’ pay per month for three months.
The punishments heretofore prescribed by subdivision (b) (1) A, B(i) and (iii) and subdivision (b) (2) A, D, E, G(i), (iv) and (v) hereof may be imposed only during annual active duty for training or active state service, except that extra duties may be imposed upon enlisted persons while in armory drill status for two hours (to be completed not later than 2400 hours) for two consecutive drills.
Detention of pay shall be for a stated period of not more than one year but if the offender’s term of service expires earlier, the detention shall terminate upon that expiration. No two or more of the punishments of arrest in quarters, correctional custody, extra duties, and restriction may be combined to run consecutively in the maximum amount imposable for each. Whenever any of those punishments are combined to run consecutively, there shall be an apportionment. In addition, forfeiture of pay may not be combined with detention of pay without an apportionment. For the purposes of this subdivision, “correctional custody” means the physical restraint of a person during duty or nonduty hours and may include extra duties, fatigue duties, or hard labor. If practicable, correctional custody shall not be served in immediate association with persons awaiting trial or held in confinement pursuant to trial by court-martial.
(d) The officer who imposes the punishment authorized in subdivision (b), or his or her successor in command, may, at any time, suspend probationally any part or amount of the unexecuted punishment imposed and may suspend probationally a reduction in grade or a fine imposed under subdivision (b), whether or not executed. In addition, the officer may, at any time, remit or mitigate any part or amount of the unexecuted punishment imposed and may set aside in whole or in part the punishment, whether executed or unexecuted, and restore all rights, privileges, and property affected. The officer may also mitigate reduction in grade to a fine or detention of pay. When mitigating:
(3) extra duties to restriction;
the mitigated punishment shall not be for a greater period than the punishment mitigated. When mitigating a fine to detention of pay, the amount of the detention shall not be greater than the amount of the fine. When mitigating reduction in grade to a fine or detention of pay, the amount of the fine or detention shall not be greater than the amount that could have been imposed initially under this article by the officer who imposed the punishment mitigated.
(e) A person punished under this section who considers his or her punishment unjust or disproportionate to the offense may, through the proper channel, appeal to the next superior authority. The appeal shall be promptly forwarded and decided, but the person punished may in the meantime be required to undergo the punishment adjudged. The superior authority may exercise the same powers with respect to the punishment imposed as may be exercised under subdivision (d) by the officer who imposed the punishment. Before acting on an appeal from a punishment of:
(7) detention of more than 14 days’ pay;
the authority who is to act on the appeal shall refer the case to a judge advocate of the California National Guard for consideration and advice, and may so refer the case upon appeal from any punishment imposed under subdivision (b).