The Somme sector of the Western Front was held by French forces until early 1916, when the British and Dominions Third and Fourth Armies moved into the northern

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 sec

The Arras sector of the Western Front in World War I (WW1) was held partly by the British and Dominions 1st Army from September 1915, and almost wholly by the 1