Thomas and his fellow soldiers are shown navigating tense urban combat environments and firing at (unseen) enemies.
Later, Christian shows his father's last video to the group gathered for the school play. In it, Thomas is hunkered down in the middle of a battle, and we can hear mortars and explosions in the distance. At the end of the video, an explosion kills him, and the camera shows his body on the concrete with a bleeding wound to the head.
Another combat scene involves a flashback to Bob's time in Vietnam, specifically his memories of a POW rescue attempt that went tragically awry (which he narrates to his wife).
Most of those with Bob's unit were killed, and we see him cradling a soldier suffering from head and neck wounds.
A member of the Christian biker gang seeks Bob's help after accidentally shooting himself in the torso. (We see a bloodstain on his shirt.)