Check for Provide an accessible overview (MOS:INTRO): Done
Major Point 1: Childhood, education and early career "Born in Calw, Schnaufer grew up in the Weimar Republic and Third Reich as the first of four children of Alfred Schnaufer and his wife Martha. The family owned and operated a winery business. Schnaufer, a good student and already a glider pilot at school, began military service in the Wehrmacht by joining the Luftwaffe in 1939." (summarised well in the lead)
Major Point 2: World War II "A flying ace or fighter ace is a military aviator credited with shooting down five or more enemy aircraft during combat.[1] All of his 121 victories were claimed during World War II at night, mostly against British four-engine bombers,[Note 1] for which he was awarded the coveted Knight's Cross of the Iron Cross with Oak Leaves, Swords and Diamonds (German: Ritterkreuz des Eisernen Kreuzes mit Eichenlaub, Schwertern und Brillanten) on 16 October 1944, Germany's highest military decoration at the time.[Note 2] He was nicknamed "The Spook of St. Trond", from the location of his unit's base in occupied Belgium." & "After training at various pilot and fighter-pilot schools, he was posted to Nachtjagdgeschwader 1 (NJG 1—1st Night Fighter Wing), operating on the Western Front, in November 1941. He flew his first combat sorties in support of Operation Cerberus, the breakout of the German ships Scharnhorst, Gneisenau, and Prinz Eugen from Brest. Schnaufer participated in the Defence of the Reich campaign from 1942 onwards, in which he would achieve most of his success. He claimed his first aerial victory on the night of 1/2 June 1942. As the war progressed, he accumulated further victories and was given leadership responsibilities, at first as a technical officer, then as a squadron leader and group commander. He was awarded the Knight's Cross of the Iron Cross for 42 aerial victories on 31 December 1943." & "Schnaufer achieved his 100th aerial victory on 9 October 1944 and was awarded the Diamonds to his Knight's Cross of the Iron Cross with Oak Leaves and Swords on 16 October. He was appointed Geschwaderkommodore (wing commander) of Nachtjagdgeschwader 4 (NJG 4) on 4 November 1944. By the end of hostilities, Schnaufer's night fighter crew held the unique distinction that every member—radio operator and air gunner—was decorated with the Knight's Cross of the Iron Cross." (summarised well in the lead)
Major Point 3: Prisoner of war "Schnaufer was taken prisoner of war by British forces in May 1945." (summarised well in the lead)
Major Point 4: Later life and death "After his release a year later, he returned to his home town and took over the family wine business. He sustained injuries in a road accident on 13 July 1950 during a wine-purchasing visit to France, and died in a Bordeaux hospital two days later." (summarised well in the lead)
Check for Relative emphasis: Done
Major Point 1: Childhood, education and early career "Born in Calw, Schnaufer grew up in the Weimar Republic and Third Reich as the first of four children of Alfred Schnaufer and his wife Martha. The family owned and operated a winery business. Schnaufer, a good student and already a glider pilot at school, began military service in the Wehrmacht by joining the Luftwaffe in 1939." (the lead gives due weight as is given in the body)
Major Point 2: World War II "A flying ace or fighter ace is a military aviator credited with shooting down five or more enemy aircraft during combat.[1] All of his 121 victories were claimed during World War II at night, mostly against British four-engine bombers,[Note 1] for which he was awarded the coveted Knight's Cross of the Iron Cross with Oak Leaves, Swords and Diamonds (German: Ritterkreuz des Eisernen Kreuzes mit Eichenlaub, Schwertern und Brillanten) on 16 October 1944, Germany's highest military decoration at the time.[Note 2] He was nicknamed "The Spook of St. Trond", from the location of his unit's base in occupied Belgium." & "After training at various pilot and fighter-pilot schools, he was posted to Nachtjagdgeschwader 1 (NJG 1—1st Night Fighter Wing), operating on the Western Front, in November 1941. He flew his first combat sorties in support of Operation Cerberus, the breakout of the German ships Scharnhorst, Gneisenau, and Prinz Eugen from Brest. Schnaufer participated in the Defence of the Reich campaign from 1942 onwards, in which he would achieve most of his success. He claimed his first aerial victory on the night of 1/2 June 1942. As the war progressed, he accumulated further victories and was given leadership responsibilities, at first as a technical officer, then as a squadron leader and group commander. He was awarded the Knight's Cross of the Iron Cross for 42 aerial victories on 31 December 1943." & "Schnaufer achieved his 100th aerial victory on 9 October 1944 and was awarded the Diamonds to his Knight's Cross of the Iron Cross with Oak Leaves and Swords on 16 October. He was appointed Geschwaderkommodore (wing commander) of Nachtjagdgeschwader 4 (NJG 4) on 4 November 1944. By the end of hostilities, Schnaufer's night fighter crew held the unique distinction that every member—radio operator and air gunner—was decorated with the Knight's Cross of the Iron Cross." (the lead gives due weight as is given in the body)
Major Point 3: Prisoner of war "Schnaufer was taken prisoner of war by British forces in May 1945." (the lead gives due weight as is given in the body)
Major Point 4: Later life and death "After his release a year later, he returned to his home town and took over the family wine business. He sustained injuries in a road accident on 13 July 1950 during a wine-purchasing visit to France, and died in a Bordeaux hospital two days later." (the lead gives due weight as is given in the body)
"Heinz-Wolfgang Schnaufer (16 February 1922 – 15 July 1950) was a German Luftwaffe night fighter pilot and is the highest scoring night fighter ace in the history of aerial warfare."
Check for Format of the first sentence (MOS:BOLDTITLE): Done
Check for Proper names and titles: Done
Check for Abbreviations and synonyms (MOS:BOLDSYN): None
MisterBee1966, I'm delighted and inspired to see your extraordinary diligence here. As per the above checklist, I do have some insights that I think will be useful in improving the article: