About as realistic as Call of Duty, Rambo-action ruined the drama!
How anyone could take this movie seriously is beyond me; it wasn't a terrible movie or anything, production value was top-notch but the actual war scenes really killed it for me, especially in contrast with the overly dramatic non-battle scenes. Tae storms machine guns head on like some 80s action hero, of course only getting grazed in the arm, and basically finished all the missions on his own; it actually reminded me of Call of Duty with a bunch of NPCs just shooting at each other until the player (and thus the main character) makes a move and saves the day.
We are then led to believe that it is all to save his brother from this dramatic nightmare of awesome heroic warfare and are supposed to take it seriously? I mean come on, no wonder his brother didn't want to go home, he was way behind on his killstreak. But all jokes aside, the amount of supposedly dramatic but secretly gloryfying violence was just ridiculous, same goes for the overly sentimental and cheesy 'tearjerker' scenes and flashbacks, it al seemed more like a parody to me. It's a shame though because there really was some interesting stuff here.