The large area of blood to the right side of the forehead has a border that lines up very well with the nose. It makes it look almost as if the forehead is flattened. I think that might be a slight illusion created by that line.
He definitely received a violent wound while his heart was beating as evidenced by the hemorrhage from the nasal and oral cavities. Looks like a penetrating wound on the bridge of the nose causing massive damage to the
underlying structures of the nasal cavities and cranial vault. My first impression was shrapnel wound. I'm betting he was already dead when he hit the ground.
War is Hell