Those who have fought on a battlefield often describe it as a combination of extreme excitement and gut-wrenching terror. It's also a huge assault to the emotions that can leave permanent mental health damage. Today, that condition is called post-traumatic stress disorder (PTSD). In the past, it has been known as battle fatigue (WWI) and shell shock (WWII).  This well-styled, organized, and powerfully written book is a compilation of first-hand accounts by warriors who suffer some aspects of...