Russia

“An Orthodox priest administers Holy Communion to a wounded Russian soldier during the Russo-Japanese War of 1904–1905.”
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Imperial Russian Army, “Mass on active service,” circa 1910s.
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“A Scene repeated often with minor variations in many lands as the armies marched forth in 1914: A Russian Field Mass for officers and men of a Regiment leaving St. Petersburg for the front as the nations mobilized, each confident of the justice of its cause” (From “Mid-Week Pictorial” Published weekly by the New York Times Company, week ending July 28, 1934).
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