Peter Butterworth beyond the camp grounds. He was subsequently sent to Stalag Luft III, near Sagan, the scene of "The Great Escape". Whilst at Stalag Luft III he met Talbot Rothwell, who later went on to write many of the Carry On films in which Butterworth was to star. Rothwell and Butterworth formed a duet and sang in the camp shows, where booing and catcalls covered the sounds of an escape tunnel being dug by other prisoners. Butterworth was one of the vaulters covering for the escapers during the escape portrayed by the book and film "The Wooden Horse". Butterworth later auditioned
Stalag Luft III to have escaped detection in Luft III. The German guards were referred to by POWs as "Goons" and, unaware of the Allied connotation, willingly accepted the nickname after being told it stood for "German Officer Or Non-Com". German guards were followed everywhere they went by prisoners, who used an elaborate system of signals to warn others of their location. The guards' movements were then carefully recorded in a logbook kept by a rota of officers. Unable to stop what the prisoners called the "Duty Pilot" system, the Germans allowed it to continue and on one occasion the book was used