My Daddie was in WWII, and 'back then', I don't believe anyone knew about Post Traumatic Stress. BUT, as a child of his , I lived with what it did to him. No one in the family realized what he had gone thru had caused his 'mental health' problems . Even me. Until just the last few years, I realized what my Daddie has been going thru & living for all those years. He is gone now & I think about him & cry every so often, realizing that he was 'alone', with whatever! Thank goodness our servicemen & women now at least have that understanding & support & help. We can try to imagine what they gave for us, but we'll never really grasp it.