The Ypres sector of the Western Front was held predominantly by the British and Dominions Armies from 1914 to 1918. The Ypres Salient, at the centre of this sector, was one of the most intensively fought over single locations of the First World War. By the end of 1917 the sector was full of railways, dumps, camps, and other facilities. Much was lost in the German advance in April 1918, but from September 1918 the German Army was driven eastwards until...