The British War Machine: WW1's Most Potent Explosive

What happened at the H.M. Factory Gretna during WW1? Home to the United Kingdom's largest munitions factory, HMF Gretna employed 1000s of young women to make the war's most potent explosive, Cordite. Join Untold History's own Dr James Rogers as he discovers the history of the young 'Gretna girls' that worked in the Factory and the dangerous task they faced creating, what Sir Arthur Conan Doyle called, ' The Devil's Porridge.'