The whole drama could have been avoided if...
Spoilers
the Platoon leader or commanding officer do a head count of his troops before running back to the SK border.
then again, we might not be able to enjoy this brotherly drama.
Sure, and what an absolutely enjoyable film that would have made.
This is pedantic, I know, but it's one troop made up of troopers. Several troops are multiple groups of multiple soldiers.