when did germany first use poison gas in ww1
31 January 1915
-1
Section::::History of poison gas in World War I.:1915: Large-scale use and lethal gases.

Chemical weapons in World War I
167578
5156603891313324242
NONE
Section::::History of poison gas in World War I.:1915: Large-scale use and lethal gases.

Chemical weapons in World War I
167578