Evidence of proceedings of court martial

(1) The original proceedings of a court martial purporting to be signed by the president of the court and being in the custody of any person having the lawful custody thereof shall be admissible in evidence on production from that custody. (2) A document purporting to be a copy of the original proceedings of a court martial or any part thereof and to be certified by the person having the lawful custody of the proceedings to be a true copy shall be evidence of the contents of the proceedings or the part to which the document relates, as the case may be. (3) This section applies to evidence given in any court, whether in civil or criminal proceedings.