Many veterans came home from World War II with what is now known as PTSD, but it usually went undiagnosed and untreated.
The horrors of the Civil War led to madness and suicide among many soldiers and veterans, but comparisons to modern diagnoses of PTSD are difficult.
It was once as big as the fear of flying, and it helped show the way to psychotherapy and the modern treatment of traumatic stress.
“Combat fatigue” and “post-Vietnam syndrome” lost ground to a more sophisticated understanding of the problem of PTSD.