This groundbreaking book provides the first comprehensive analysis of Ming China’s pursuit of national security along its 1,700 miles of northern frontier. Drawing on a wealth of original sources, John Dardess vividly portrays how Ming China’s emperors, officials, and commanders in the field thought, argued, and made decisions in real time as they worked to defend their country. Despite common perceptions of the central role of the so-called Great Wall of China, Dardess convincingly shows that the wall was but a minor piece in a much bigger effort to battle Tatar looting. Dardess immerses readers in the day-to-day world of the Ming as he explores the question of how leaders kept their country safe over the 276 years the dynasty ruled.