British fire 85 tonnes of Phosgene at German lines around St Quentin, ten days after a German gas attack fires 1000 tonnes of Mustard and Phosgene gas in half a million shells between Ypres and St Quentin.
— 1914-1918 War (@WW1TheGreatWar) March 19, 2018
British fire 85 tonnes of Phosgene at German lines around St Quentin, ten days after a German gas attack fires 1000 tonnes of Mustard and Phosgene gas in half a million shells between Ypres and St Quentin.