But when World War One started they became weapons. Pilots could spy on enemy targets and the first bombs were dropped from the air. Scientists, inventors and engineers had begun their own battle ...

675 * These weapons can deliver a unitary warhead or submunitions, but the U.S. Air Force has not indicated how many of each type were used.

But when World War One started they became weapons. Pilots could spy on enemy targets and the first bombs were dropped from the air. Scientists, inventors and engineers had begun their own battle ...