Basic Details Surname Cooper Forenames Arthur Information stated on memorial War Second World War (1939-1945) Served or died Died Service number D/JX 365441 Primary Service As stated on memorial Rank / Title (Primary - Stated) Able Seaman Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS Porpoise Rank / Title (Primary - Our reference) Able Seaman Death and Burial details Cemetery PLYMOUTH NAVAL MEMORIAL Panel 93, Column 3. Year of death 1945 Month of death January Day of death 16 Age at death 21 Manner of death reference Killed in Action