At the height of World War II, Hitler's Luftwaffe tried frantically yet vainly to perfect this shaped-charge weapon to counter U.S. B-17s. In the 1950's the United States succeeded, and in Vietnam the claymore thwarted the human-wave attacks that had overwhelmed the US forces in Korea. This is the true story of the men who developed the claymore mine, a weapon that changed the very nature of warfare. It includes interviews with the designers who were on the development team at Picatinny Arsenal as well as the original patents.