Mexican soladera, Mexican Revolution, circa 1910-1920
Russian soldiers on the Eastern Front take aim in a trench while wearing chlorine gas masks. The use of gas is ultimately unique to the first world war, having made its debut and exit within the four short years. It was often used on both axis and allies sides, and created a sense of anxiety and fear in the enamy.
Armed with Model 95 Winchester, 7.62 x 54R