If I was going to guess at a trigger for post traumatic stress, ritual sacrifice might come into it.

[He says this as if it's not even weird, as if he's listening to someone describe what they did in the war. The city, this is what it does to you.]

The things we do back home - if it screws with your mind there, that's not something that vanishes on arrival. [He's kind of testament to that.] We can look into it. The magic part, too, if you want.