542. Summoning of witnesses.

Where a judge advocate1 is satisfied that: (1) a person is likely to be able to give evidence likely to be material evidence or produce any document or thing likely to be material evidence, for the purpose of any proceedings2 before the Court Martial3; and (2) it is in the interests of justice to issue a witness summons4 to secure the attendance of that person to give evidence or to produce the document or thing5, the judge advocate must issue a witness summons directed to the person concerned and requiring him to attend before the court at the time