543. Further process to secure the attendance of witnesses.

If the judge advocate1 is satisfied by evidence on oath that: (1) a person is likely to be able to give material evidence or produce any document or other thing likely to be material evidence in the proceedings2; (2) it is in the interests of justice that the person should attend to give evidence or to produce the document or thing; and (3) it is probable that a witness summons3 would not procure his attendance, the judge advocate may, instead of issuing a witness summons, issue a warrant to arrest that person and bring him before the court4.

Where (a)