This has become one of my favorite books of the Vietnam war. Having a large library of books about the war, this book is right near the top of the list. The author lived the maxim of never asking your men to do some thing that you wouldn’t do your self. His going into the tunnels really surprised me as most officers wouldn’t do it. A good leader that cared for his men. Speaking as the enemy was obviously based on the intelligence they gathered, in the field, from enemy documents. It should required reading at West Point.