10 Underrated War Horror Movies

Considering how disturbing it is to watch nations tear each other apart, it's surprising there aren't more horror stories centred around war. After all, some of the most nightmarish imagery in cinema came from features like Schindler's List and Saving Private Ryan.

Sure, there's Dead Snow, Pan's Labyrinth, and Overlord, but many war-horror features never made a blip on the radar, which is a shame as there are quite a few movies in this niche genre that deserve attention.

At first, meshing war with horror sounds like overkill. Aren't bombs, tanks, atomic weapons, and a never-ending stream of bullets already frightening enough?

However, combining these genres can work surprisingly well. Soldiers often deal with the ghosts of their past and their inner demons. With that in mind, a film can explore these themes further by tossing in literal ghosts and demons. As Jacob's Ladder proved, a lot of veterans suffer PTSD, so it's difficult to tell whether these incidents are real or not, creating a psychological experience. 

While World War II, the French Revolution, and the English Civil War were devasting, the following ten entries elevated the scares by throwing in all sorts of aliens, zombies, and ghouls.

It's easy to mistake Sauna as a spoof, considering it revolves around an evil bathhouse. Goofy premise aside, there's nothing funny about this 16th-century war drama.

Shortly after the Russo-Swedish war ends, brothers Knut and Eerik are tasked with marking out the borders of their new kingdom. After killing a peasant and leaving his daughter to die, the siblings abandon their mission and head to a sauna in the marsh, hoping to wash away their sins. Upon entering the remote spa, Knut and Eerik find themselves tormented by a hostile phantom.

What makes Sauna unnerving is how it's hard to tell what's real and what's isn't. Not only is it told in a non-linear fashion, it's obvious the brothers had major issues before setting foot in the steamy chamber. Eerik suffers from failing sight while Knut has been hardened by his time on the front line. When the bathhouse intensifies these insecurities, it's not clear at first whether they're wrestling with their subconscious or if they're legitimately being haunted.

It may be a psychological drama as much as it is an outright horror, but Sauna will leave anyone rattled due to how effectively it explores guilt, sin, and redemption.