This is a german movie about the Battle of Stalingrad. It's main focus is on a group of german soldiers and their trials through the battle. The Battle of Stalingrad is one of those things that's so huge in scale that numbers no longer make sense. The battle lasted six months, there were 1.5 million casualties on both sides and the germans suffered a decisive defeat. The battle was fought with utmost brutality by both sides.
The movie does not follow the larger strategic aspects of this battle, and just focuses on the platoon. It's realistic and probably one of the few movies I have seen that portrays the german soldiers as individuals.