Great plot, excellently under-stated performances, writing and direction. The fact that this film was made in 1946, so close to the events its depicts, seems to add an almost documentary-like quality to this film. Indeed, in the opening credits, the line 'Filmed in the British Zone of Western Germany' suggest that the realistic prison-camp scenes were probably shot in genuine locations. The cast is almost a repertory company of British 1940s actors - but no-one is taking an easy ride. There are fresh and challenging performances, even though the faces are familiar. What struck me is how the film is free of the gung-ho 'smart prisoners, dumb Krauts' type of prison camp film that dominated the genre later on. This film is the product of a people tired of war. At the same time, it retains some of the stiff upper lip feel of many British wartime films, but with the confidence of victory, it does not need to indulge in the 'beastly Hun' elements. Moving without being sentimental. A very 'human' film, only a few steps short of a masterpiece.