Das boot (1981)
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"You know - we've had to imagine the war here, and we have imagined that it was being fought by aging men like ourselves. We had forgotten that the wars were fought by babies. When I saw those freshly shaved faces, it was a shock. "My God, my God - " I said to myself, "it's the Children's Crusade."' (from Slaughterhouse Five, Kurt Vonnegut)