Some experts have expressed skepticism about both Trump's description of the weapon and whether it even exists.

Wars are rarely fought with perfect equipment. Throughout history, militaries have fielded weapons they knew were flawed, ...

Much of modern warfare was built around the idea that cover bought survival. Trenches, bunkers, armored hulls, and urban ...

Military history is riddled with weapons systems failing to live up to the reality of the situation on the battlefield. […] ...

As military spending skyrockets and the push is on for new weapons to go quickly from the lab to the fleet, military leaders, defense contractors, innovators and investors will gather Dec. 16 in ...

During World War II, American scientists created a weapon that made anti-aircraft fire several times more deadly. The ...

What secret weapons projects never left the drawing board? Take a look back through history at some of the more bizarre ones.