Basic Details Surname Walker Forenames John S Gender Male Information stated on memorial War First World War (1914-1918) Served or died Not Stated on Memorial Primary Service As stated on memorial Unit (Primary - Stated) Black Watch Rank / Title (Primary - Stated) Sergeant Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) The Black Watch (Royal Highlanders) Rank / Title (Primary - Our reference) Sergeant