Basic Details Surname Gruber Jr Forenames Martin Gender Male Information stated on memorial War Second World War (1939-1945) Served or died Served Primary Service As stated on memorial Service (Primary - Stated) United States Army Air Force Unit (Primary - Stated) 447th Bomb Group Rank / Title (Primary - Stated) 2nd Lt Our References Service (Primary - Our reference) United States Army Air Force Unit (Primary - Our reference) 447th Bomb Group Rank / Title (Primary - Our reference) Second Lieutenant Death and Burial details Year of death 1944 Month of death July Day of death 12 Manner of death reference Not Applicable Personal Details Occupation Navigator