Add Yahoo as a preferred source to see more of our stories on Google. The US Army fired a nuclear weapon from its atomic cannon for the first and last time 69 years ago. The cannon, initially named ...

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How big is an atomic bomb? It took a B-29 to carry the first one, dropped on Hiroshima, which may have weighed more than 10,000 Ibs. The Army’s announcement last week that it will abandon its ...

Key Point: The Soviets lost interest in launching nuclear weapons from tanks, but their usefulness has not disappeared. In the 1950s and 1960s when tactical nuclear weapons were expected to rule the ...

In Exercise Long Horn, the vast Army-Air Force mock war in Texas, the green-clad Aggressor forces had just seized a position deep behind the defenders’ lines and were massing for a new attack.