Review online
Seems to be somewhat negative.. 2 stars out of 5.
Text in Finnish.
http://www.stara.fi/?p=7250
Also, a making-of article online:
http://www.mil.fi/ruotuvaki/?action=read_page&pid=105&aid=1725
I think what's partly putting the reviewer off, is that this isn't actually a traditional war movie, where the plot follows one person or one group of people throughout the story. In a story like that you always have to make stuff up and insert people into events that didn't actually happen to them, or insert fictional characters.
What the filmmakers wanted to do here, was to use a documentary-style approach and stick to actual facts of what happened, and as such you can't focus on one point of view in a chaotic battle like this, but you have to show what happened all around the battlefield. So the film is episodic, as the camera jumps around the battlefield, showing what happened from the point of view of many different units. The focus isn't on any particular person or unit, but the battle itself.
I haven't seen the film yet so I can't say if it works or not, but let's hope so. This might be an interesting experiment.