Just watched it, it was a decent movie and pretty historically accurate... except, the Germans. It's a shame they had to ruin this with the usual portrayal of die-hard Nazi fanatics hell bent on murder. The usual nasal, over-egged 'Kraut' accents etc etc. This couldn't be further from the truth. Broadcasting on Allied frequencies, was not only technically unlikely, but would never happen as transmission sources could be pinpointed via HUFFDUFF. It was far-fetched and never happened during the war. Ditto the lurid markings on the boats. While it is true that the Germans were engaged in a ruthless war of attrition against Allied shipping, the U-Boat men fought with tenacity, bravery and as much honor as circumstances would allow. They were no more or less ruthless than US submariners engaging the Japanese in the Pacific - or Allied ships picking up German survivors. There are numerous accounts of U-Boats rendering assistance - google the Laconia Incident for one particular account. It's probably a little known fact, at the start of the war U-boats had to stop and verify national identity and allow crews to abandon ship under the standing international maritime Prize rules. The U-Boat men had a 78% attrition rate and 28,000 casualties, yet they still volunteered, even when the odds were truly stacked against them later in the war. These were also young men, who, to be fair, were not in a position to refuse service to their country. I don't condone Nazi Germany, or seek to glorify the actions of the Kreigsmarine, but it would have been far more interesting to portray the German U-Boat crews with more historical accuracy. The point being in war, there is no black and white and there are no true winners or losers. It was a missed opportunity to tell the real story.