Basic Details Surname Mason Forenames Derick Cecil Gender Male Information stated on memorial War First World War (1914-1918) Served or died Died Primary Service As stated on memorial Unit (Primary - Stated) SWB Rank / Title (Primary - Stated) 2nd Lt Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) The South Wales Borderers Rank / Title (Primary - Our reference) Lieutenant (S) Death and Burial details Country of death Belgium Town of death Passchendaele Year of death 1917 Month of death November Day of death 10 Age at death 20 Manner of death as stated Missing Manner of death reference Missing