This book — originally a series of essays — was written by a Union colonel from New England, in charge of black troops training off the coast of the Carolinas. It offers a refreshing portrait of life in the Union Army as the narrator captures the raw humor that develops among the men in combat. Unabridged republication of the edition published by Fields, Osgood, & Co, 1870.
Here's a sample of other books in this Dover category
The Art of War by Antoine-Henri Jomini, G. H. Mendell, W. P. Craighill Jomini's firsthand reports of the Napoleonic Wars are the most authoritative accounts available. In both historic and practical terms, his landmark work remains the definitive guide to strategy and tactics.
Principles of War by Carl von Clausewitz The most cited, most controversial, and most modern book on warfare. The author examines moral and psychological aspects of war: courage, audacity, self-sacrifice, the importance of morale and public opinion, more.
The Essential Clausewitz: Selections from On War by Carl von Clausewitz, Joseph I. Greene Succinct edition of the influential work, from its observations on the nature and theory of warfare to its outlines of strategic policies: moral force and military virtues, effects of victory and retreat, more.
The Art of War by Sun Tzu 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; much more.