(a) General rule.--Special courts-martial may be convened by any of the following:
(1) Any person who may convene a general court-martial.
(2) The commanding officer of a garrison, fort, post, camp, station, Pennsylvania National Guard base or station.
(3) The commanding officer of a brigade, regiment or corresponding unit of the Army.
(4) The commanding officer of a group or corresponding unit of the Air Force.
(5) The commanding officer or officer in charge of any other command when authorized by the Adjutant General.