Basic Details Surname Sumpster Forenames F M Gender Male Information stated on memorial Alternative forename Frank Mariner War First World War (1914-1918) Served or died Died Honours Mentioned in Despatches Primary Service Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) Royal Berkshire Regiment Rank / Title (Primary - Our reference) Lieutenant Death and Burial details Country of death France Year of death 1918 Month of death March Day of death 21 Manner of death reference Killed in Action