Basic Details Surname Mayes Forenames John Arthur (Jack) Gender Male Information stated on memorial War Second World War (1939-1945) Served or died Died Primary Service Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS Cossack Rank / Title (Primary - Our reference) Petty Officer Death and Burial details Year of death 1941 Month of death October Day of death 23 Age at death 38 Manner of death reference Killed in Action