MAPS OF HISTORY · ON THIS DAY · April 22
THE DAY IN HISTORY · APRIL 22
April 22 in history
1915 — Gas at Ypres
22 Apr 1915 — A green-yellow chlorine cloud rolls over French colonial troops at Langemarck: the first mass poison-gas attack. By 1918 gas has killed some 90,000 and maimed a million more. Remember what industrial chemistry did here.
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