71.—(1) A record purporting to be—
(a)made in any service record in pursuance of any Act or of Queen’s Regulations, or otherwise in pursuance of naval, military, or air force duty, and
(b)signed by the commanding officer of the person to whom the record relates or by a person whose duty it was to make or keep the record,
shall be evidence of the matters stated in the record.
(2) A document purporting to be a copy of such a record (including the signature) as is mentioned in paragraph (1) and purporting to be certified to be a true copy by a person stated in the certificate to have custody of the record shall be evidence of the matters stated in the document.