Subject to § 13A–402 of this subtitle, special courts–martial have jurisdiction to try persons subject to this title for any offense made punishable by this title, and may, under such limitations as the Governor may prescribe, adjudge any punishment not forbidden by this title except: dishonorable discharge; dismissal; confinement for more than 1 year; forfeiture of pay exceeding two–thirds pay per month; or forfeiture of pay for more than 1 year. A bad–conduct discharge, a confinement for more than 6 months, or a forfeiture of pay for more than 6 months may not be adjudged if charges and specifications are referred to a special courts–martial consisting of a military judge alone under § 13A–401 of this subtitle.