Book excerpt: The acclaimed author and preeminent military historian John Keegan examines centuries of human conflict. From primitive man in the bronze age to the end of the cold war in the twentieth century, Keegan shows how armed conflict has been a primary preoccupation throughout the history of civilization and how deeply rooted its practice has become in our cultures. "Keegan is at once the most readable and the most original of living military historians . . . A History of Warfare is perhaps the most remarkable study of warfare that has yet been written."--The New York Times Book Review.