The Radio Operator & Air Gunner's Badge, is a commonly accepted title for the German title, translated into English,Combined Air Gunner, Radio Operator and Flight Engineer Badge, it was a German military decoration awarded to radio operators, air gunners and mechanics (flight engineers) who were members of the German Air Force, translated into what in German, a flight engineer (FE), also sometimes called an air engineer, is the member of an aircraft's flight crew who monitors and operates its complex aircraft systems?
Radio Operator Badge: The Radio Operator & Air Gunner's Badge (German: "Fliegerschützenabzeichen für Bordfunker" ) is a commonly accepted title for the "Luftwaffen-Fliegerschützen-Bordfunker-und Bordmechanikerabzeichen" (Combined Air Gunner, Radio Operator and Flight Engineer Badge). Flight engineer:  Flight engineers can still be found on some larger fixed-wing airplanes, and helicopters.
Luftwaffe