Editor's note: Today, November 11, is Armistice Day, commemorating the armistice signed between the Allies and Germany, marking the end of hostilities on the Western Front of World War I. The veteran soldier relived the horrors of the infamous First World War gas attacks, vividly recalling how the German army dispersed the poisonous gas as Dublin soldiers attended to the wounded in no man's land near Mouse Trap Farm. Unbeknownst to Campbell, a German shell had pierced the metal container of his gas mask earlier in the day, allowing the poisonous gas to seep into his gas mask.