...maybe his entire leadership chain was full of psychopaths.
I mean, it could be true.
Or maybe it's that 4/25 is an Airborne brigade, and like all paratroopers they volunteered three times for positions of increasing danger -- once for the Army, once for the Infantry, and once for Airborne. Perhaps a group that has self-selected for the honor of a life of danger has a particularly strong disdain for someone who deserts his post.
No, it surely has to be the psychopath thing.