A mishap on my part made this movie so much more suspenseful
At the beginning of the movie when we're introduced to Jin-seok as an elder man and he gets a call from the army saying they've found his brother, I, for what ever reason, didn't remember which name they said was the living man and which one they said was the dead one.
So throughout the whole movie I knew one of the brothers was going to die, but I didn't know which. This actually had me on the edge of my seat during the majority of the combat scenes (and the Yong-Shin scene) in the movie's latter half.
Funny how that works.