Basic Details Surname Percy Forenames Alan Ian, Duke Of Northumberland Gender Male Information stated on memorial War First World War (1914-1918) Served or died Served Honours MVO; Chevalier Legion d'honneur; Mentioned in Despatches Notes Enlisted/Mobilised 04/08/1914; Demobilised November 1918; Served in France Primary Service As stated on memorial Service (Primary - Stated) Army (British) Unit (Primary - Stated) Grenadier Guards Rank / Title (Primary - Stated) Lieutenant-Colonel Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) Grenadier Guards Rank / Title (Primary - Our reference) Lieutenant Colonel Death and Burial details Manner of death reference Other Personal Details Occupation Northumberland Estates, Alnwick Castle