Military and Veterans Code § 129

Every member of the militia who is ordered out, or who volunteers or is drafted under the provisions of this division and who does not appear at the time and place designated by the Governor, or under his authority, within twenty-four hours from such time, and who does not produce a sworn certificate of physical disability from a physician in good standing, is a deserter and shall be dealt with as prescribed in the Articles of War of the United States, or by this division.