The victim appears to be a Syrian soldier that was executed with a headshot. Bullet flying through his head created inner pressure that resulted in an eye popped out of the socket. He appears to be in full gear with lots of ammo magazines on him. Perhaps he was gunned down during a shootout?
Also, I think he’s been dead for maybe a day or two cause his head appears slightly discolored. I wonder if that was caused by the headshot, or if it means that his head started to putrefy.
Props to Best Gore member DerSteppenwolf for the video: