I agree with woofgang. I see it more as an educational film, and certainly not as an entertaining one, if you define entertaining as amusing, or light-hearted. It's a film that serves to add to our knowledge of what happened to some people during the Second World War. As far as 'a cautionary example' is concerned, well, you could call it that, I suppose, but this film - and others like it - will probably not prevent similar things happening in other, future, wars.