Basic Details Surname Porter Forenames John S. Gender Male Information stated on memorial War Second World War (1939-1945) Served or died Died Primary Service As stated on memorial Unit (Primary - Stated) Royal Air Force Sub-unit (Primary - Stated) Not Stated on Memorial Rank / Title (Primary - Stated) Sgt. Navr. Our References Service (Primary - Our reference) Royal Air Force/ Royal Flying Corps Unit (Primary - Our reference) Royal Field Artillery Rank / Title (Primary - Our reference) Sergeant (Navigator)