"The British Army on the Western Front, 1914-1918" British Army piggery near the fat-extracting plant at Etaples with the swill from which the pigs were fed, 26 April 1918. The pigs were used to supplement the rations. The farm was constructed by the Directorate of Works (Royal Engineers) in 1917 and early in 1918 the Quartermaster General ordered pig farms to be built in all British Army camps.