So he is having therapy?
I wonder if the therapist can help with the perceived stigma?
It is simple fact that a percentage of people exposed to certain types of trauma will develop ptsd symptoms. The military are generally beginning to understand this, but sadly there is a lingering irrational feeling around this, as there is not with other service injuries.
Also, many people suffering from ptsd blame themselves and see themselves as weak. Your husband sounds as though he had the guts to recognise that he wasn’t well. Good on him! One of the great tragedies of history lies in the multitudes of men, and increasingly women, who have returned from military service (or police service, and other occupations) with severe ptsd that was never understood and about which they felt unable to talk. The effects over the years on families and children and the men themselves has been appalling and has included violence and other abuses.
And this is, in his case, a service injury. He’d not feel less of a soldier, I hope, if he’d suffered a leg amputation, for instance?
It sounds like a perfectly reasonable diagnosis
If you have been on military sites I am not surprised that aggression is a common symptom.
Cognitive behaviour therapy is a recognised treatment
There are others which some people experience as giving good symptom relief, eg EMDR, but I am not sure what is available to you.