Basic Details Surname O'Brien Forenames Robert Edward Gender Male Information stated on memorial War First World War (1914-1918) Served or died Died Primary Service As stated on memorial Service (Primary - Stated) Army (British) Unit (Primary - Stated) Argyll and Sutherland Highlanders Sub-unit (Primary - Stated) 2nd Battalion Rank / Title (Primary - Stated) Second Lieutenant Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) Princess Louise`s (Argyll and Sutherland Highlanders) Rank / Title (Primary - Our reference) Second Lieutenant Death and Burial details Country of death Belgium Cemetery Hal Cemetery Year of death 1919 Month of death February Day of death 20 Age at death 19 Manner of death as stated Died of bronchial pneumonia Manner of death reference Died of Disease