In 1754, a senseless massacre began innocently enough. A young George Washington, leading a force of Virginia volunteers and Indians, stumbled into an engagement with a French detachment in a remote Allegheny glen. To this day, the circumstances are cloudy as to who shot first and how the hostilities broke out. What is not in doubt is that Washington bungled badly: he lost control of his men, and before the mayhem ended, 13 Frenchmen were killed, wounded soldiers were brutally scalped and one man was even decapitated. As is so often the case in history, this one small act, however...