 Nyorai kuenderera kweiyi ndima - Musi waFebruary 3 na4, 1942, Clausen na Oberleutnant Friedrich Geißhardt vakapfura pasi Polikarpov R-5s kana Polikarpov R-Zs ye622 LBAP Legkii Bombardirovochnyy Aviatsionyy PolkLight Bomber Aviation Regiment uye 672 LBAP. Clausen akava ace-in-a-day kokutanga musi wa 9 March 1942, achidaidzira kukunda mumhepo 36 kusvika ku40. Pashure peHondo yeKerch Peninsula, chiverengero chake chakasvika 52 kukunda mumhepo musi wa 6 Kubvumbi 1942. Nokuda kweizvi akapiwa muchinjikwa weGermany muGoridhe musi wa 18 May 1942, chipo chakananga ne Reichsmarschall Hermann Göring. Mazuva mana gare gare, akaremekedzwawo neKnights Cross yeIron Cross . 