16296 Sun Tzu http://ecx.images-amazon.com/images/I/51KPT7NNH2L._SX80_.jpg 8 Widely regarded as "The Oldest Military Treatise in the World," this landmark work covers principles of strategy, tactics, maneuvering, communication, and supplies; the use of terrain, fire, and the seasons of the year; the classification and utilization of spies; the treatment of soldiers, including captives, all have a modern ring to them. 216