Stalag Luft III Williams, the book "Stolen Journey" by Philpot and the 1950 film "The Wooden Horse". There had been escape attempts (one of which inspired the film "The Wooden Horse") and many tunnels had been started and discovered before completion. In March 1943, Royal Air Force Squadron Leader Roger Bushell conceived a plan for a mass escape from the North Compound, which took place on the night of 24/25 March 1944. He was being held with the other British and Commonwealth airmen and he was in command of the Escape Committee that managed all escape opportunities from the north compound. Falling back
Bill Ash escape, but the tunnel was discovered when 10 prisoners had got away. Ash continued the attempt and eventually gained his freedom. He boarded a goods train for Kovno, but was discovered by station guards and returned to Sagan. His de-briefing after liberation from captivity in April 1945 records the places where he was imprisoned as Dulag Luft (Oberusel) for about three days in June 1942, then Stalag Luft III at Sagan from June to September 1942 Oflag XXI-B (Schubin), where he was held from September 1942 to April 1943, back to Stalag Luft III for April and May 1943, and