According to the manual's chapter on "War crimes, individual criminal accountability, and command responsibility," killing or injuring an adversary who has surrendered or lay down his arms is a war crime.
Whenever a blood-covered object arcs blood onto a neighboring surface, a cast-off pattern is produced. When someone strikes a victim and then pulls their bloodied fist or weapon back, they frequently exhibit this behavior. The blood spatter tails would point in the object's motion direction.
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