law: Armed Forces Tribunal Act 2007 
  17. Powers of the
  
  Tribunal on appeal under section 15
  The Tribunal, while
  
  hearing and diciding an appeal under section 15, shall have the power-
  a.  
  
    to
  
  order production of documents or exhibits connected with the proceedings before
  
  the court martial;
  b.  
  
    to
  
  order the attendance of the witnesses;
  c.  
  
    to
  
  receive evidence;
  d.  
  
    to
  
  obtain reports from Court martial;
  e.  
  
    order
  
  reference of any question for enquiry;
  f.  
  
    appoint
  
  a person with special expert knowledge to act as an assessor; and
  g.  
  
    To
  
  determine any question which is necessary to be determined in order to do
  
  justice in the case.