Hans-Ulrich Rudel in the Stuka Cockpit

Oberleutnant Hans-Ulrich Rudel (Flugzeugführer in 1.Staffel / I.Gruppe / Sturzkampfgeschwader 2) doing some microphone check before his 333rd combat mission on Volkhov front near Leningrad, September 1941. The picture was taken by Kriegsberichter Karl Bayer. On 21 September 1941, Rudel took part in an attack on the Soviet battleship Marat of the Baltic Fleet. Marat was sunk at her moorings on 23 September 1941 after being hit by one 1,000-kilogram (2,200 lb) bomb near the forward superstructure. It caused the explosion of the forward magazine which demolished the superstructure and the forward part of the hull. 326 men were killed and the ship gradually settled to the bottom in 11 meters (36 ft) of water. Her sinking is commonly credited to Rudel alone, but Rudel dropped only one of the two bombs that sank her.

Source :
Bayerische Staatsbibliothek (Image-No.: 50153877)
https://biography.wikireading.ru/85230
https://en.wikipedia.org/wiki/Hans-Ulrich_Rudel
https://www.reddit.com/r/ww2/comments/ln0hy9/oberleutnant_hansulrich_rudel_microphone_check/