Friedrich_Rumpelhardt--Fritz_Rentrop

Friedrich "Fritz" Rumpelhardt (19 June 1920 – 20 January 2011) was a German air officer during World War II. He was also a recipient of the Knight's Cross of the Iron Cross, the highest award in the military and paramilitary forces of Nazi Germany during World War II.
During his career Rumpelhardt flew in 130 missions as a Bordfunker (radio/radar operator) with two night fighter wings of the Luftwaffe. He participated in 100 aerial victories as a crewman with Major Heinz-Wolfgang Schnaufer from October 1942 until the end of the war. Rumpelhardt was the most successful radar operator—in terms of aerial victories claimed—in the Luftwaffe night fighter force.