This is a deeply human and almost documentary account of the life of prisoners after Dunkirk who are not released until towards the end of the war, Michael Redgrave as the leading actor being far from alone among suffering fellow soldiers, as there is a number of tales told of dire destiny in this concentration camp of arduous fates. Redgrave is of course the most interesting case, a Czech escaped from the Germans and sought by Gestapo, hiding as an Englishman with a fake identity with suspiciously good knowledge of German, as his father was a diplomat in both London and Berlin. There is also Gordon Jackson with the loss of his sight and his despair about having to give up his betrothed, there is the family man whose wife is having a baby in his absence with that whole family story, there is the major (Basil Radford) struggling with the challenges of his responsibility, there are the sore trials used by the Germans make the camp existence more difficult than necessary for the prisoners, who nevertheless manage to break loose into comedy when an occasion arrives. It's heartrendingly human all the way, and the great love story developing in the ruins with inevitably critical consequences makes this film a definite and almost obligatory classic.