Why Did The Pows Escape

Having wasted enormous resources on recapturing Allied prisoners of war (POWs), the Germans move the most determined to a new, high-security prisoner of war camp. The commandant, Luftwaffe Colonel von Luger, tells the senior British officer, Group Capt Ramsey, "There will be no escapes from this camp." Ramsey replies that it is their duty to try to escape. After several failed escape attempts on the first day, the POWs settle into the prison camp.
Gestapo and SS agents bring Squadron Leader Roger Bartlett (RAF) to the camp and deliver him to von Luger. Known as "Big X," Bartlett is the principal organizer of escapes and Gestapo agent Kuhn orders that he be kept under the most restrictive permanent security confinement, which Col. von Luger,
Flight Lieutenant Hendley, an American in the RAF, is "the scrounger" who finds what the others need, from a camera to clothes and identity cards. Australian Flying Officer Louis Sedgwick, "the manufacturer," makes tools such as picks for digging and bellows for pumping air into the tunnels. Flight Lieutenant Danny Velinski and William "Willie" Dickes are "the tunnel kings" in charge of making the tunnels. Eric Ashley-Pitt of the Royal Navy devises a method of hiding bags in the prisoners' trousers and spread dirt from the tunnels over the camp, under the guards' noses. Forgery is handled by Flight Lieutenant Colin Blythe, who becomes nearly blind from intricate work by candlelight. Hendley takes it upon himself to be Blythe's guide in the
Danny nearly snaps from claustrophobia and delays those behind him, but is helped by Willie. Seventy-six escape.
After attempts to reach neutral Switzerland, Sweden, and Spain, almost all the POWs are recaptured or killed. Hendley and Blythe steal an airplane to fly over the Swiss border, but the engine fails and they crash-land. Soldiers arrive. Blythe, his eyesight damaged, stands and is shot. Hendley waves and shouts "don't shoot", and is captured as Blythe dies. Cavendish, having hitched a ride in a truck, is captured at a checkpoint, discovering another POW, Haynes, captured in his German soldier disguise.
Bartlett is recognized in a crowded railroad station by Gestapo agent Kuhn. Another escapee, Ashley-Pitt, sacrifices himself when he kills Kuhn with Kuhn's own gun, and soldiers then shoot and kill him. In the commotion, Bartlett and MacDonald slip away but they are caught while boarding a bus after MacDonald blunders by replying in English to a suspicious Gestapo agent who wishes them "Good luck". Hilts steals a motorcycle, is pursued by German soldiers, jumps a barbed wire fence but becomes entangled in another and is captured, he escapes execution as a spy by showing them the airforce label on his