Trade paperback. 366 pages. Bibliography, Index. Second printing. A thought provoking work by a former Army officer, now psychology professor, on man’s innate reluctance to take life and the increasing sophistication of modern armies “…using Pavlovian and operant conditioning” to overcome this aversion. The statistics provided on the reluctance of combat infantry [US} to fire their rifles from World War II through the Vietnam war will both shock and fascinate. No previous ownership marks. No spine crease. A clean, square, fresh and unmarked copy, appears unread and like new. Fine.