ATTACK AT YPRES

The first use of chlorine gas in battle was a sunny April day at Ypres, Belgium. The gas was released upon the trenches of French and Canadian soldiers.

When the Germans marched into the trenches, Willi Seibert, a German soldier, wrote, "Nothing was alive. All of the animals had come out of their holes to die. … You could see where men had clawed at their faces, and throats, trying to get breath. Some had shot themselves."