Basic Details Surname Grant-Duff Forenames A Gender Not stated on memorial Information stated on memorial War First World War (1914-1918) Served or died Died Honours Companion Of The Order Of The Bath Primary Service As stated on memorial Service (Primary - Stated) Commonwealth Unit (Primary - Stated) Black Watch (Royal Highland Regiment) Of Canada Rank / Title (Primary - Stated) Lieutenant-Colonel Our References Service (Primary - Our reference) Commonwealth Armed Forces Unit (Primary - Our reference) Black Watch (Royal Highland Regiment) of Canada Rank / Title (Primary - Our reference) Lieutenant Colonel Death and Burial details Manner of death as stated Unknown