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
Gordon Brettell war. He was sent to Stalag Luft III in the province of Lower Silesia near the town of Sagan (now Żagań in Poland). Here he became an enthusiastic member of the escape committee specializing in forged documents and hand producing rubber stamps from linoleum and rubber boot heels to authenticate the documents and fashioning embossing tools from toothbrushes. He was promoted to flight lieutenant in captivity on 17 February 1943 and by 1943 had participated in at least one previous escape attempt. He spent time "outside the wire" after breaking out from Stalag Luft III with Kingsley Brown on 27