It's funny, it's tense, it features two great performances from two actors and the director expertly creates a web of odd tension where you actually don't know what is happening for the majority of the run time.

While it doesn't offer any answers, it both thrills and makes you think.

The plot isn't so bad, but the pace of storytelling is too slow which makes people bored. Certain moments are so obvious and unnecessary for the main plot. I would've fast-forwarded those moments if it was an online streaming. The ending looks like implying a sequel, not sure if this movie will get one

The movie's not perfect, but it sticks the landing of its message. It was engaging - thrilling at times - and I personally thought it was a great time.

I agree with most of the positive reviews here. This is an interesting and entertaining film.On the negative side, Charles Laughton seemed to be channeling Winston Churchill. This is somewhat confusing as Churchill was head of the admiralty at one time.I have no objections whatsoever to seeing the wondrous Mylene D., but were shorts THAT short in the 1940s??? It seems very obvious that she was added to the movie as 'sex appeal' (either that, or she was the producer's girl friend).And did they have invisible-to-the-naked eye rays as protective devices for valuable items back then? I've never seen a film from that time period with that particular gimmick. Under Ten Flags was actually made in 1960, but use of the rays for that purpose seems to be a more modern invention (than the film's time setting.) These are mere quibbles. See it.

The previous review is correct, this is a poor film. However the lack of blood 'n' guts is based on fact. Atlantis was captained by Bernhard Rogge. The skipper of the British vessel, "City of Baghdad", which the Atlantis sunk in July of 1941, stated, "His treatment of prisoners left respect, instead of hatred." The Captain of the "City of Baghdad" was Captain J. Armstrong-White. He wrote the foreword in "Atlantis, The story of a German Surface Raider" written by U. Mohr & A.V. Sellwood.Rogge became a Vizeadmiral (vice-admiral) by the end of World War II, and eventually became a Konteradmiral (rear-admiral) of the West German Bundesmarine.Rogge also was one of the few German officers of flag rank who was not arrested by the Allies after the war. This was due to the way he had exercised his command of Atlantis.

Under Ten Flags..Is in my opinion one of the best acted and directed movies dealing with world war II. It depicts a man's duty to country.. his personal honor to himself in up-holding honest and humanitarian beliefs even when required to do his duty and kill the enemy. The lead is by veteran actor Van Heflin.,who plays the captain of the German Raider "Atlantis".,this is based on a true story and facts of the german surface raider "Pacas" during world war two. This type of war movie needs to be returned to the screen to show our younger generation that although war is brutal and even unavoidable man can still win or lose with dignity and honour. I would like to see this movie made available on Video and returned to TV.

This is truly a classic! It portrays war at sea, as a deadly game of hide and seek. Cause as much havoc and destruction, without being identified or located. In this movie, the enemy(the British) has no idea what kind of ship(s) or submarine(s)are sinking vital merchant ships. It is a raider ship,with a clever Captain that can change the appearance of his ship as quickly as changing clothes! Nationalities were no obstacle. It also showed that all German officers were not followers of Hitler. This one, in real life, went on to serve as a NATO naval officer. This ship's crew should have lots of war stories for the grandchildren.