Basic Details Surname O'Brien Forenames Alexander Gender Male Information stated on memorial War Military Service Served or died Died Primary Service As stated on memorial Unit (Primary - Stated) Royal Engineers Sub-unit (Primary - Stated) 131 Independent Parachute Squadron Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) Royal Engineers Death and Burial details Country of death England Town of death Cromwell Lock Year of death 1975 Month of death September Day of death 28 Manner of death as stated Accidental drowning on exercise Manner of death reference Other