A member of the militia who, without proper authority, (1) sells or otherwise disposes of, (2) wilfully or through neglect damages, destroys, or loses, or (3) wilfully or through neglect suffers to be lost, damaged, destroyed, sold, or wrongfully disposed of, military property of the United States or of any state, may be punished by up to one year of confinement, by separation with characterization up to dishonorable discharge, and by such other punishment as a court-martial may direct.