It’s a superb film about the way war twists your mind. You could call it horror but I think that would be wrong. It’s a very good portrayal of men loosing it trapped in a bunker thinking there are enemy troops surrounding them.
So what your’re saying is seven german soliders are trapped in a bunker and start to go mad is that right? 
Just about, but its not unrealistic like some horror films. They see things that are not there but it is the resault of worry. They have to hold this bunker with very little ammo and that leads them to begin thinking they are being surrounded.
But it is in the horror category, any cool scary scenes or bloody scary scenes?
Yes, they end up climbing up through a mass grave! Also the normal horrors of war, people on fire etc.
Oh boy now you got my attention.I will see how this movie is going to be!