Near the end of the movie, the private shoots the sergeant from behind in the lower right of his back, but later when the sergeant has removed all of his equipment, the wound is on his left.
When the Sergeant is threatening the family near the end of the film, the private shoots him from behind in the lower right of his back. A couple of shots later, the wound has vanished.
Near the end of the film, when Frater shoots the man in the head, the blood spatter on the wall is blue instead of red.
The length of time spent during one mission was "12 weeks and 10 days" as opposed to 13 weeks and 3 days.
At 6:42 into the film, while driving through Detroit in his Camaro, the tachometer in the lower right corner of the screen is at zero rpm.