The main plot line is the military operation involving the two protagonists. But at the same time, there are a lot of subplots told in flashback, which are about the family and life issues of the two protagonists before they join the army. I have to say these subplots are too long, really disturb the movie and interrupt the pace.
Not only that, the action scenes are also quite stupid. The two protagonists do not even know the basic military rules. Instead of finding a cover, they just stand against the sniper and get shot.