5925180 Officers eat a meal in their dugout, 1917 (lantern slide) by Unknown photographer, (20th century); National Army Museum, London; (add.info.: Officers eat a meal in their dugout, 1917. Lantern slide, World War One, Western Front (1914-1918), 1917. Dugouts were protective holes dug into the sides of trenches. Some were used as mess rooms to eat in or for sleeping in. Although they were often cramped and dirty, officers and men tried to make them as comfortable as possible by adding features like tables, shelves and lamp From a box of 80 lantern slides.); by National Army Museum ; out of copyright.