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
Leslie George Bull nuisance to the German guards (a popular pastime amongst bored RAF prisoners) and there he brewed illegal potato skin alcohol for Christmas celebrations. At Stalag Luft I Bull met Roger Bushell during various tunnelling escape attempts, Bushell later masterminded the Great Escape. Bull was part of the group with Bushell who were sent to Stalag Luft III in the province of Lower Silesia near the town of Sagan (now Żagań in Poland). He had no fear of enclosed spaces and was an enthusiastic tunneller. For the Great Escape operation Bull was one of the leading tunnellers, described as a "shift