The book ON COMBAT by Grossman.
You can find it at killology.com or Amazon.com if you can not find it anywhere else.
Book Description
"This new book is what our young warriors need. At one of David’s last briefings a Senior NCO approached me and said, "Sir, the army spent 18 years and thousands of dollars teaching me to kill. This is the first time I have been taught how to deal with it." This book will allow those not fortunate enough to hear David do their own preparation for the ultimate test." Lt. Col. Hal McNair Professor at the Joint Spec Ops University
About the Author
A former army Ranger, paratrooper, West Point Professor of Military Science and author of the classic book, ON KILLING, Lt. Col. Dave Grossman is currently the Director of the Killology Research Group and one of the world's foremost experts in the field of human aggression and the psychology of combat.