I say it's an action film rather than a war film because it has a little bit of everything - battle scenes, love scenes, and even some comedy thrown in here and there. It also does something unusual for an MGM film of the era - it doesn't get hammy and it doesn't come up with a contrived happy ending for all involved.Lt. Thomas Knowlton (Robert Montgomery) and Lt. Brick Walters (Robert Young) are the best of friends and also officers aboard a submarine during WWI. At the beginning of the film they get a new commanding officer - Lt. Cmdr. T.J. Toler (Walter Huston). Toler is a strictly by the book commander and seems to rub Knowlton and Walters the wrong way just a bit, though more from his very formal nature than by any unfairness in his command. Knowlton falls in love with Toler's daughter Joan (Madge Evans). The complicating factor here is that Joan is married - she tells him so upfront. This doesn't seem to bother Knowton too much until he finds out exactly why Joan let her foot slip.Conflict between Toler and Knowlton builds not only because of Knowlton's romance with Toler's married daughter, but because Knowlton is unfortunately an officer who thinks sentiment has a place on board a submarine in wartime. Comic relief is provided by long-time MGM contract comedian Jimmy Durante and Eugene Palette as two enlisted men on board the submarine. Sterling Holloway plays what at first seems like comic relief to the comic relief but ends up the centerpiece of a very nightmarish and unforgettable scene that reminds everyone that war truly is hell.Highly recommended as a good action film and one that plays to the strengths of the entire cast.

It's World War I and a US submarine under the command of Walter Huston is battling German destroyers and minelayers in the Atlantic.There's a rather routine romantic plot. Huston's executive officer is Robert Montgomery. He meets and falls in love with Huston's daughter, Madge Evans, and vice versa. It's only later that he discovers she's already married to a paraplegic RAF (or RFC) officer. Evans is perfectly willing to leave her bedridden husband because she's truly in love with Montgomery. Of course when Huston discovers the affair -- and it WAS physical because of the emphatic way Montgomery delivers lines about "we were in each other's arms" -- he's extremely disturbed and protests the arrangement.Already at odds with Huston, Montgomery defies him at sea, manages to get himself cashiered from the navy, then rediscovers his conscience and completes a self-sacrificial mission that saves many lives.The romance is dull, but the scenes at sea are surprisingly well done. Even the visual effects, primitive by today's standards, aren't jarring in their lack of verisimilitude. The scenes aboard the boat are interesting technologically. We've all gotten used to the equipment on the submarines of World War II. At least I think we have. There seems to be hundreds of them lurking about, surfacing on TV from time to time.It's curious to see that in the first world war, the equipment available looked quite different but did just about the same jobs. It's also a little amusing to see that the submarines of the day were subject to the same sorts of perils as those of the World War II movies -- strafed by enemy fighters, depth-charged by destroyers, bombed by enemy bombers, firing back with small arms on deck, having to submerge and leave men stranded on the surface, having to reach the bottom although that depth exceeds the builders' specifications. This one adds the liberation of chlorine gas from one of the batteries.I suppose it's understandable that these elements should run through just about every submarine movie ever made, up to and including World War II. How many dangers can an undersea vessel be subject to? I mean, nobody is going to parachute out of one of them. The crew can't be trapped in a trench behind enemy lines. Nobody is going to run about and clean out an enemy machine gun nest with a tommy gun and a grenade.Robert Young has a minor role as the nice guy who is left on the surface to die because the boat must dive under attack. Jimmy Durante is the cook who makes wisecracks and funny faces. Eugene Palette is along for the ride. Some scenes generate more tension than you might think -- when the boat is nose-deep in mud and the engine won't start -- and sometimes tragedy -- as when Sterling Holloway is stuck in a dogged-down compartment filling with chlorine and can't be let out.The plot isn't to be taken seriously. Montgomery, now a civilian, sneaks back aboard for the final mission and Captain Huston gruffly orders him to "take your post." What IS his post? And, when Montgomery merely hints at his honorable reasons for deserting Huston's daughter, Huston seems to grasp the entire situation as if by an avalanche of intuition.Small stuff though. It's an exciting movie for its time.

As I type these comments I'm watching a DVD of this movie that I just got from a mail-order dealer, and I'm finding that it holds up extremely well, with strong characterizations, believable situations, and well-staged action scenes.It's been a good 45 years, maybe 50, since I saw HELL BELOW, but the one scene that made an extremely deep impression on me was Sterling Holloway's death scene, which several other commenters have mentioned here. I haven't gotten to that scene yet on this viewing, but I can vouch for what other comments have said: once you see Sterling Holloway's death scene in this movie, you will absolutely never, ever forget it. Judging from how strong the film so far is holding up, I fully expect that scene to live up to the memory of it -- as unquestionably one of the greatest death scenes in movie history. The movie's worth seeing for that moment alone, but even without it, it would be a first-rate early submarine drama.

I recommend that movie viewers if in the New York City area go to the Intrepid museum and get some idea of how closed in and cramped the living was for the crews of World War II vintage submarines. How much more so that must have been for the seamen during World War I. It must have truly been hell below.Walter Huston and Robert Montgomery head the cast of Hell Below, Huston as the by the book captain and Montgomery as his free wheeling number two. They're both quite believable as Naval officers and the rest of the cast like Robert Young, Eugene Palette, Jimmy Durante, Madge Evans, Sterling Holloway, etc. fill their roles quite nicely.The silent service got more popular during World War II and after. It's amazing, but I could name a whole slew of submarine pictures like Torpedo Run, Operation Pacific, Hellcats of the Navy, Run Silent, Run Deep and many more and you'll see the same plot situations in all of them. I guess there truly is a limit on situations as well.Jimmy Durante's performance is interesting. He's pretty funny and his scene with the boxing kangaroo while on shore leave is very funny indeed. But I'd have to say a character like him in those cramped quarters is probably very necessary for morale. If you don't have someone like that to break the tension on board a submarine, you ought to get one transferred to your ship immediately.The highlight for me however is Sterling Holloway's death scene. Very similar to Sean McClory's in Island in the Sky. It will haunt you long after you've seen this film.