A Russian Officer and two soldiers wearing Zelinsky-Kummant gas masks, decontaminating the trenches after a gas attack exercise, 1915.

A Russian Officer and two soldiers wearing Zelinsky-Kummant gas masks, decontaminating the trenches after a gas attack exercise, 1915.

tags: Qu'est-ce que c'est que ca?,

from: https://questcequecestqueca.tumblr.com/post/108268320481