I agree that more could be done by way of mental health treatment for troops. One group I was part of had it’s own group Chaplain (me) and a group Psychologist and our own doc.
It was a great team, and our Psych, a real human being, knew when to back off and when to push.
The real culprit in my mind, though, is how we fight wars in this year long rotation between terror and normalcy. WWII was the last war the US fought correctly....all out until unconditional surrender of the enemy.
It is not humane to give a troop a year long rest between assignments in an 11 year war. It is a prescription for the mentally sound to become borderline, for the average to become incapacitated, and for the borderline to become psychotic.