At the front E.L.S during World War I

Photograph shows soldiers wearing gas masks, advancing through a cloud of gas; one soldier who is not wearing a mask grasps his throat as he falls to the ground; it is unclear if he is responding to the gas or if he has been hit by a bullet, his rifle and helmet are on the ground and his gas mask hangs against his chest.
J233522 U.S. Copyright Office.

Inscribed on lower right corner: © E.L.S.
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