59. Any person subject to this Act who commits any of the following offences, that is to say:-(a) being duly summoned or ordered to attend as a witness before a court-martial wilfully or without reasonable excuse, makes default in attending; or(b) refuses to take an oath or make an affirmation legally required by a court-martial to be taken or made; or(c) refuses to produce or deliver any document in his power or control legally required by a court-martial to be produced or delivered by him; or(d) refuses when a witness to answer any question which he is by law bound to answer; or(e) is guilty of contempt of court-martial by using insulting or threatening language , or by causing any interruption or disturbance in the proceedings of such court;shall, on conviction by court-martial, be liable to suffer short imprisonment.