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Russian trench being flooded by German asphyxiating gas (1919)

"The insidious and deadly gas that creeps noiselessly down toward the foe. Russian trench near Baronvitsky at the moment when it is flooded by the Germans with asphyxiating gas." Exact location unknown. Located in the area of the Eastern Front of WWI. (Source: New York Times, 1919. Courtesy of the U.S. Library of Congress. Public domain. Etching edited by Dr. Douglas J Lanska.)