1.1M views · 2.9K reactions | “Shell Shock,” coined in WWI for soldiers’ psychological symptoms initially linked to physical trauma, later revealed a complex mix of psychological and physical factors, ultimately contributing to the concept of PTSD. Like history? Follow us @HistoryPhotographed  | History In Pictures | Facebook

"Shell Shock is terrible ... It was tough for a while as every time someone dropped something on the floor, like for instance a spoon, or an unusually loud noise, I would holler and either try to hide under the sheets or get under the bed." -Duncan Kemerer, 28th Division Shell Shock, or PTSD, has been a part of war since war began. Mental injuries took their toll on soldiers in WWI, and illustrate the statement made by Sgt. York that, "War means more than uniforms, marching, and band music, it m