Most Civil War generals were graduates of West Point, and many of them
helped transform the U.S. Army from what was little better than an armed
mob that performed poorly during the War of 1812 into the competent
fighting force that won the Mexican War. Wayne Wei-siang Hsieh
demonstrates how the "old army" transformed itself into a professional
military force after 1814, and, more important, how "old army" methods
profoundly shaped the conduct of the Civil War.