Question

describe what happened on april 22, 1915

Explanation:

April 22, 1915, marked the first large - scale use of chemical weapons (chlorine gas) by the German army during World War I at the Second Battle of Ypres. This event was a significant and brutal development in the war, causing chaos and heavy casualties among Allied troops due to the unexpected and devastating effects of the gas.

Answer:

On April 22, 1915, during World War I, the German army launched the first large - scale chemical attack (using chlorine gas) at the Second Battle of Ypres, causing heavy casualties and chaos among Allied forces.