As a war movie, I don't think this one has more decoration, so it's just More realistic, more than 5 hours in length, it may make people feel bored, there are few dialogues, often face-to-face, and there is no omission of any subtle description of human nature and inner activities in it—— Even without more lines.
Some people may think that in these 5+ hours - only sunk a few merchant ships, was hit several times, only docked once for resupply, and finally had a somewhat dramatic tragic result - is it a bit too boring? Bored? And I think that's exactly that, in stark contrast to the dramatic American blockbusters - that's why European films are worth more than American ones. The U-571 with the same theme in the United States is good-looking and good-looking, but it is too far behind to arouse the audience's inner resonance at all.
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