Basic Details Surname Riddells Forenames Sydney G Gender Male Information stated on memorial War First World War (1914-1918) Served or died Died Service number 345831 Primary Service As stated on memorial Unit (Primary - Stated) ROYAL NAVY Rank / Title (Primary - Stated) 1st Writer Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) The Honourable Artillery Company Rank / Title (Primary - Our reference) First Writer Death and Burial details Year of death 1914 Month of death November Day of death 1 Manner of death as stated HMS Monmouth sunk with all hands at the Battle of Coronel Manner of death reference Killed in Action