“ In addition, when members of more than one armed force are prisoners of war or otherwise detained by a hostile entity so that circumstances prevent resort to the normal chain of command, a commissioned officer of one armed force who is not a medical officer or chaplain is 'his superior commissioned officer' with respect to a member of another armed force who is his junior in rank. ”

“ Members of the Armed Forces of the United States who are captured and held prisoner by a hostile armed force are effectively outside the direct operational control of United States military authorities. Recent conflicts involving members of the Armed Forces indicate a need for establishing and maintaining a chain of command among prisoners of war or detained personnel. The senior member of all Services must be provided the necessary command authority over all members of the Armed Forces with whom he is imprisoned or detained. ”