This is a complete facsimile reprint of the May 1943 edition of the War Dept. manual for the Portable Flamethrowers, M1 and M1A1, as prepared under the direction of the Chief of the Chemical Warfare Service. This manual was intended for the using arms and services. It gave all necessary information regarding the construction, functioning, and identification of all standard materiel pertaining to the portable flame thrower, with directions for operating and servicing such materiel. 123 pages, 57 photos and drawings.