Don't forget that WW1 was one of the first wide scale wars where it was common to be "blown up", and for some people, several times. Today we know that the actu

Don't forget that WW1 was one of the first wide scale wars where it was common to be "blown up", and for some people, several times. Today we know that the actual act of being in a shockwave has long term real physical effects on the brain based on studies on soldiers blown up by IEDs. I wonder how much different that type of trauma is from trauma incurred by witnessing something.