This compact reference guide provides descriptions, technical specifications and illustrations of the machine guns used in the WWI and WWII, some of which v such as the 0.50 Browning v are still in service today. The US alone is believed to have made 2.6 million guns between the attack on Pearl Harbor (7 December 1941) and the end of the campaigns in the Far East (August 1945). Walter details and compares weapons produced in countries around the world.