Basic Details Surname Johnston Forenames Octavius 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) Middlesex Regiment (Duke Of Cambridges Own ) Rank / Title (Primary - Stated) Captain Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) The Duke of Cambridge's Own (Middlesex Regiment) Rank / Title (Primary - Our reference) Captain Death and Burial details Country of death France Country of burial France Cemetery Thiepval Mem Year of death 1916 Month of death July Day of death 2 Manner of death as stated K.i.a. Manner of death reference Killed in Action