But when World War One started they became weapons. Pilots could spy on enemy ... gas masks had to be created urgently to protect soldiers during an attack. But inventions must never be discovered ...

one of the bloodiest battles of World War One and the first in which mustard gas was used effectively as a weapon. Chemical weapons gained notoriety during the conflict, not only for their ...

Russian troops deployed in Ukraine are using antiquated weaponry, according to influential voices in Russia's military sphere ...

an assault rifle and a pistol dating back to World War One Hundreds of illegal firearms and air weapons have been handed in to police during a two-week amnesty campaign. A total of 474 firearms ...

The Organisation for the Prohibition of Chemical Weapons (OPCW), a global watchdog ... is an oily substance which was widely used during World War One. It causes irritation of the lungs, eyes ...

But when World War One started they became weapons. Pilots could spy on enemy ... gas masks had to be created urgently to protect soldiers during an attack. But inventions must never be discovered ...