The Second Battle of Ypres was a significant World War I battle fought from April 22 to May 25, 1915, marked by the first large-scale use of chemical weapons in warfare. This battle took place in the Ypres Salient in Belgium and involved Allied forces facing off against German troops. The introduction of chlorine gas by the Germans shocked the Allies and represented a new phase in the brutal tactics of World War I, highlighting the horrors of modern warfare and the lengths to which nations would go to gain an advantage.
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