The machine-gun was a game-changing weapon of mass destruction ... In the battlefield conditions of WW1 this meant an average of 500 rounds a minute with a range of over 3,000 yards or 2,743m.

It wasn’t just armed — it was built around its weapon. A monstrous Gatling gun so massive, it could shake the skies… and the engineers had no choice but to wrap an entire plane around it.