On October 2, 1944, Gen. Dwight D. Eisenhower distributes to his combat units a report by the U.S. Surgeon General that reveals the hazards of prolonged exposure to combat. “[T]he danger of being killed or maimed imposes a strain so great that it causes men to break down. One look at the shrunken, apathetic faces of psychiatric patients…sobbing, trembling, referring shudderingly to ‘them shells’ and to buddies mutilated or dead, is enough to convince most observers of this fact.”