A quiet moment in German trenches. German soldiers smoking and reading in a trench in Flanders, Belgium, during World War I.

A quiet moment in German trenches. By Bain News Service, between 1914 and 1915. Photograph shows German soldiers smoking and reading in a trench in Flanders, Belgium, during World War I. (Source: Flickr Commons project, 2012 and The Times History of the War, London, 1914, vol. 3, p. 468). Library of Congress Prints & Photographs Division. https://www.loc.gov/item/2014699064/