Don’t let its size fool you—the Sopwith Pup was one of the most agile and effective fighters of World War I. Armed with a single 7.7mm Vickers machine gun, this lightweight aircraft delivered deadly ...

The machine-gun was a game-changing weapon of mass ... 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.