You can be asked to go to a court martial as a witness. The Judge or Registrar can send you a summons to attend. You might need to give evidence or bring papers and documents that are relevant to the case. The summons must be in a special form and can be sent by the Judge, Registrar, or someone involved in the case. You might get a summons if the Judge or Registrar wants you to come to court. The Director of Military Prosecutions or the accused person can also ask for you to be summoned. The summons will tell you when and where to go to court. The Judge or Registrar can ask you to bring things that are relevant to the case. This can include papers, documents, or other things that you have or control. You will need to follow the instructions in the summons.