Basic Details Surname Couper Forenames Alexander Thomas Gender Male Information stated on memorial War First World War (1914-1918) Served or died Died Primary Service Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) Royal Engineers Rank / Title (Primary - Our reference) Sapper Death and Burial details Country of death France Country of burial France Town of burial Longueval Cemetery Caterpillar Valley Cemetery, Longueval Year of death 1916 Month of death September Day of death 15 Age at death 29 Manner of death as stated Killed in action Manner of death reference Killed in Action