But when World War One started they became ... where poisonous gas was used for the first time, gas masks had to be created urgently to protect soldiers during an attack. But inventions must ...

The Paris Gun, one of World War I’s most formidable and terrifying weapons ... during an eight month siege. To this day, it remains the heaviest mobile artillery weapon ever used in combat.

The March 27 discovery of a rusty and decayed German howitzer from the First World War that had been buried at the PNE made ...

But when World War One started they became ... where poisonous gas was used for the first time, gas masks had to be created urgently to protect soldiers during an attack. But inventions must ...