The One That Got Away (1957) on Netflix

A cocky German fighter pilot is shot down over England in 1940 and makes numerous attempts to escape to fight again.

This is the true story of Oberleutnant Franz von Werra, the only German prisoner of war to escape from imprisonment in Britain during the Second World War.

—Patrick Dominick <p-dominick@adfa.oz.au>

Shot down over England, Cocky Oberleutenant Franz von Werra is interrogated by army intelligence. His dossier shows the boastful von Werra is a media hero in Germany for a daring dogfight over Britain in which he claims to have shot down several English planes and destroyed more on the ground. The British know the action never took place and the story is false, a lie by the egotistical flyer who craved the celebrity and acclaim the fabricated action gave him. Confronted with the truth, von Werra displays only bravado, claiming that he will escape within six months. He spends the rest of his captivity trying to do just that.

—duke1029

The exploits of Franz von Werra early during WWII are dramatized. A German Luftwaffe pilot, he, shot down, is forced to make an emergency landing in Kent, England on September 5th, 1940, he captured by the British authorities who are aware of his celebrated status at home for his military efforts. Partly a result of how he is interrogated and partly believing it his duty as a German officer, von Werra is determined not only to escape but to make it back to Germany so that he can report back what he's learned to assist further in the German war effort. After the first such attempt, the British make it harder and harder for von Werra to escape, which only makes him more determined and more brazen in his actions to accomplish his goal.

—Huggo