Stalag Luft III it as a longer third-person narrative under the title "The Wooden Horse", which was filmed as "The Wooden Horse" in 1950. He included many details omitted in his first book, but changed his name to "Peter Howard", Michael Codner to "John Clinton" and Oliver Philpot to "Philip Rowe". Williams also wrote a prequel, "The Tunnel", an extended study of the mentalities of life as a prisoner of war. Although not an escape novel, it shows the profound urge to escape, and explores the ways that camp life affected men's emotions. Paul Brickhill was an Australian-born Spitfire pilot, shot down in
World War I prisoners of war in Germany recognized that it was a camp devoted to intelligence collection. This "Listening Hotel" was similar in organization and purpose to the Dulag Luft camp at Frankfurt in the Second World War. These camps were often located in regions where the climate or the terrain made life difficult, but also near the front, where the prisoners might be taken to rebuild trenches or cart away bodies. The goal of the reprisal camps was to put pressure on enemy governments to ameliorate conditions of detention for German prisoners, and to punish prisoners (for instance following an escape). Life for prisoners sent to