Basic Details Surname Mathias Forenames William M Gender Male Information stated on memorial War Second World War (1939-1945) Served or died Died Primary Service As stated on memorial Service (Primary - Stated) United States Army Air Force Unit (Primary - Stated) 353rd Fighter Group Sub-unit (Primary - Stated) HQ Rank / Title (Primary - Stated) 1st Lt Our References Service (Primary - Our reference) United States Army Air Force Rank / Title (Primary - Our reference) First Lieutenant Death and Burial details Year of death 1943 Month of death June Day of death 29 Manner of death as stated Died in Service Manner of death reference Killed in Action