The credits of this episode, which is set in a British army barracks in Germany, acknowledge "the kind co-operation of The Commanding Officer and All Ranks of First Armoured Division Headquarters and Signal Regiment, and The Army Legal Corps".
Rumpole served in the "RAF Ground Staff" during World War II. Actor Leo McKern served in the Royal Australian Engineers, despite having only one functioning eye. John Mortimer (also with sight problems) worked for the Crown Film Unit, writing scripts for propaganda films.