The senior force judge advocates in each of the State military forces or that judge advocate’s delegates shall make frequent inspections in the field in supervision of the administration of military justice in that force. Convening authorities shall at all times communicate directly with their judge advocates in matters relating to the administration of military justice. The judge advocate of a command is entitled to communicate directly with the judge advocate of a superior or subordinate command, or with the State Judge Advocate. A person who has acted as member, military judge, trial counsel, defense counsel, or investigating officer, or who has been a witness in a case may not later act as a judge advocate to a reviewing authority on the same case.