The Army, for one, has tried to correct their misgivings concerning their soldiers and PTSD.
In Wars before Vietnam the "cure" for "shell shock" was to put them right back into it (something I guess we would call exposure therapy today?) For some soldiers today, who are recognized with war issues like this and followed by the chaplain and medical personnel, returning to their unit helps them heal. When units are not deployed and returned fully together, then the problem can be compounded.
IMO there are not enough providers in the world for all of the people who have PTSD from one trauma or another. I have internally complained for over ten years that with all the traumas in the world today the governments need to be addressing the issue and preparing for it to be a major health issue very soon. (Just my POV.)
I won't put all the weight on the soldier's shoulders. (say that ten times fast!) Someone with PTSD, especially undiagnosed, probably doesn't know that all he/she is experiencing is not normal, and needs expert attention. It's up to the families and medical personnel to rally together for them, imo.
My son and I email almost daily now. He has set his sights on taking his family to DisneyWorld in March...and that he should be "home" before the next holiday season.