There are plenty of movies to cover. This one is probably the most famous: "The Great Escape" starring Steve McQueen, James Garner and Richard Attenborough. It is based on the true story of a group of Allied POWs who escaped from Stalag Luft III.
According to its IMDb plot summary:
According to this site, many of the scenes are true to life, though with the usual composite characters and mixed-up timelines.
title: The Great Escape
release date: 1963, on DVD 2004
list price: $19.98
run time: 172 minutes