Do people with PTSD ever decide that war is a bad thing?

I have heard a number of interviews with people with PTSD or their family members. I don’t ever recall hearing about a soldier coming home and deciding that he or she was wrong about wanting to fight. Even if the person thinks a particular war is justified, I would expect some of them to at least strongly believe that everything possible has to be done to first find peaceful solutions. I have not come across that sentiment. I wonder if part of PTSD might not be a kind of cognitive dissonance, a gung ho attitude toward fighting coming into conflict with the horror of it.