I was talking about it earlier but you can also see him make the same far away, stricken face in other moments that remind him of war (watching Silna’s dad get operated on without anesthesia to remove a bullet, and he also does it after sir john dies in front of him, and then he obviously does it while carnivale is burning and before he stands out by the burned bodies because people with PTSD intentionally seek out things that remind them of what happened to re-achieve that rush). But it is like in those moments he believes he’s somewhere else; like he’s not present and reliving whatever it is in his head