Basic Details Surname Cocks Forenames Oliver Gender Male Information stated on memorial Alternative forename Oliver Charles William War First World War (1914-1918) Served or died Died Primary Service Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS Indefatigable Rank / Title (Primary - Our reference) Wireless Operator Death and Burial details Country of death Not Stated on Memorial Country of burial Not Stated on Memorial Cemetery Not Stated on Memorial Year of death 1916 Month of death May Day of death 31 Age at death 20 Manner of death as stated Not Stated on Memorial Manner of death reference Killed in Action Personal Details Occupation Not Stated on Memorial