S.C. Code Ann. § 25-1-2740

The trial counsel, the defense counsel, and the court-martial shall have equal opportunity to obtain witnesses and other evidence in accordance with regulations prescribed by the Governor. Process issued in court-martial cases to compel witnesses to appear and testify and to compel the production of other evidence must be similar to that which courts of the state having jurisdiction may lawfully issue, as prescribed by the laws of this State.