Sacrifice To The Flies

When we reported to Training Camp Alpha at seventeen, we each got our own S13. That day, when I wrapped my hands around the black metal casing of the rifle, something in me died. I just didn't realise it yet. Thirty soldiers in a dystopian state receive intense military training from childhood. Six young soldiers, depraved of their humanity and their youth, remain and are deployed to the Front. One of them murders their section leader. All of them deny guilt. Which one of them is lying?