Book excerpt: THE AGE OF NAPOLEON is the biography of an enigmatic and legendary personality as well as the portrait of an entire age. J. Christopher Herold tells the fascinating story of the Napoleonic world in all its aspects -- political, cultural, military, commercial, and social. Napoleon"s rise from common origins to enormous political and military power, as well as his ultimate defeat, influenced our modern age in thousands of ways, from the map of Europe to the metric system, from styles of dress and dictators to new conventions of personal behavior.