Papers relating to his service in World War One, 1915-1918, principally comprising French and British casualty and strength figures, 1915-1918. Correspondence and associated papers relating to his work with Groupe des Armées du Nord and Grand Quartier Général, France, 1915, 1917-[1919], notably including correspondence between FM Sir Douglas Haig and Generals Robert Georges Nivelle and Henri-Philippe Pétain, 1917-1918. Operational documents, 1917-1918, mainly concerning 5 Army, IX Corps and III and VI French Armies. French Grand Quartier Général official communications, reports and telegrams, 1918, with maps relating to operations in France and Belgium, 1917-1918 and 1939-1940.