This Marine Corps manual traces the bayonet from its crude beginnings in early musket warfare to its place as a disciplined weapon of close combat. It follows the evolution from plug bayonet to ring bayonet and socket bayonet, showing how battlefield demands and mechanical limits shaped each redesign. More than a history of hardware, it presents the bayonet as a source of confidence, protection, and offensive spirit for infantrymen facing the chaos of war. The manual then explains bayonet fighting as an aggressive, relentless art in which hesitation can be fatal. It introduces the guard position, footwork, and movement before advancing through slashes, butt strokes, jabs, blocks, parries, whirl motions, and combination attacks, each taught with exacting precision. Defense is treated as a brief means to regain the initiative, not an end in itself. Developed from Dr. Armond H. Seidler's more natural Marine Corps system, the doctrine stresses balance, discipline, teamwork, and automatic response. Assault courses, pugil stick drills, and repeated practice build speed, endurance, and the ruthless momentum needed to seize and hold the battlefield. This edition has been fully restored with modern typesetting, custom cover design.