Editor's note: This story originally appeared on Laser Wars, a newsletter about military laser weapons and other futuristic defense technology. Subscribe here. The U.S. Navy spent at least six months ...

For decades, many of the most advanced military weapons were developed in complete secrecy. Classified research programs allowed governments to design new aircraft, missiles, and surveillance systems ...

Military history is packed with genius innovations that changed the course of warfare — but for every tank, radar system, or guided missile that reshaped battle, there are dozens of ideas that never ...

Add Yahoo as a preferred source to see more of our stories on Google. The U.S. Navy spent at least six months resurrecting a high-energy laser weapon that previously graced the bow of a warship for a ...