Portable Flame Thrower M2-2 is a comprehensive technical manual originally published by the United States War Department in 1944, detailing the design, operation, maintenance, and tactical use of the M2-2 portable flame thrower. This authoritative guide provides an in-depth look at one of World War II’s most iconic and formidable infantry weapons, used extensively by American forces in the Pacific and European theaters. The manual covers every aspect of the M2-2, from its construction and component parts—including the fuel and pressure tanks, hoses, nozzles, and ignition systems—to step-by-step instructions for assembly, disassembly, and field repairs. Richly illustrated with detailed diagrams and photographs, the book offers clear guidance on safe handling, fueling procedures, and troubleshooting common malfunctions. It also includes tactical advice for effective deployment in combat situations, emphasizing the importance of teamwork, coordination, and proper protective measures. The manual addresses the psychological and physical demands placed on operators, as well as the weapon’s limitations and vulnerabilities. Intended for soldiers, instructors, and military engineers, Portable Flame Thrower M2-2 remains a valuable historical resource for military historians, collectors, reenactors, and anyone interested in the technological innovations of World War II. Its meticulous attention to detail and practical approach make it an essential reference for understanding the operation and impact of the M2-2 flame thrower on twentieth-century warfare.