'The French Battle-Front in 1914 and 1915', 1916. Following the outbreak of war in August 1914, the German Army opened the Western Front by invading Luxembourg and Belgium, then gaining military control of important industrial regions in France. From "The War Illustrated Album De Luxe - Volume IV. The Summer Campaign - 1915", edited by J. A. Hammerton. [The Amalgamated Press, Limited, London, 1916]