I don't think The Colditz Story is the best of the PoW films, but it is still a very well done film all the same. I don't think the film is flawless, I think it could have been longer to give more depth to the characters(though there is evidence of that) and the film could have focused a bit more on the psychology of imprisonment like the TV series did.
Any faults aside, what I did love about The Colditz Story was the action. The Colditz Story has a carefully-constructed story about the daring escapes of the prisoners, and the action that forms this story is very well played, with a perfect balance of being tense in some scenes and music-hall jolly in others. The dialogue is thoughtful and quite literate, while Guy Hamilton who went on to greater projects since(primarily Goldfinger, my personal favourite of the Bond films) does a solid job directing.
The Colditz Story is beautifully shot and has the suitably foreboding German prison of the title to add to any authenticity, and there is a stirring and evocative music score too and the pacing ensures that there is very rare a dull moment. The acting is very strong, John Mills is perfectly cast, and Eric Portman also gives a performance worth of note. Ian Carmichael, Bryan Forbes and Lionel Jeffries successfully portray their heroic prison inmate characters too.
All in all, a very well-done film that despite any small imperfections deserves to be better known. 8/10 Bethany Cox