Basic Details Surname Slater Forenames Leonard 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) Royal Sussex Rank / Title (Primary - Stated) Captain Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) The Royal Sussex Regiment Rank / Title (Primary - Our reference) Captain Death and Burial details Country of death France Town of death Battle of the Aisne Year of death 1914 Month of death September Day of death 14 Manner of death as stated Killed in Action Manner of death reference Killed in Action