Ritterkreuz Award ceremony for Heinz Strüning and Alfons Köster

From left to right: Hauptmann Paul Semrau (Staffelkapitän 3.Staffel / I.Gruppe / Nachtjagdgeschwader 2), Leutnant der Reserve Heinz Strüning (Flugzeugführer in 3.Staffel / I.Gruppe / Nachtjagdgeschwader 1), Oberfeldwebel Alfons Köster (Flugzeugführer in 3.Staffel / I.Gruppe / Nachtjagdgeschwader 2), and Leutnant Wilhelm Beier (Flugzeugführer in 3.Staffel / I.Gruppe / Nachtjagdgeschwader 1) on 9 November 1942 on the occasion of the award of the Ritterkreuz des Eisernen Kreuzes to Struning and Köster. They already received the news of their award via radio/telegram on 29 October 1942 previously. The picture comes from a collection of Hans-Jakob Schmitz.

Source :
Book "Nachtjagd Defenders of the Reich 1940-1943" by Martin W. Bowman

Paul Gildner and Wilhelm Beier

November 1941: Two Luftwaffe Senior Sergeants whom also a Ritterkreuzträger (recipient of the Ritterkreuz des Eisernen Kreuzes) and night aces. From left to right: Oberfeldwebel Paul Gildner (Flugzeugführer in 3.Staffel / I.Gruppe / Nachtjagdgeschwader 1. Ritterkreuz on 9 July 1941 after 11 victories. Total score: 48 victories, with 44 at night) and Oberfeldwebel Wilhelm Beier (Flugzeugführer in 3.Staffel / I.Gruppe / Nachtjagdgeschwader 2. Ritterkreuz on 10 October 1941 after 14 victories. Total score: 38 victories, with all of them at night). The picture was taken by Kriegsberichter Doelfs. BTW, Gildner achieved one of the first recorded night victories of the war after he shot down a British Hampden bomber with his Messerschmitt Bf 110 on the night of 2/3 September 1940, his first night victory.

Source :
http://www.aircrewremembered.com/KrackerDatabase/?q=beier%2C+wilhelm
https://audiovis.nac.gov.pl/obraz/35780/16681a180a83d321351d3a71c29af66e/
http://forum.12oclockhigh.net/showthread.php?t=18402
https://ww2gravestone.com/people/gildner-paul/