Rubuta ci gaba don wannan sakin layi - Bayan dawowarsa gaba, an sanya JG 77 zuwa sabon rukunin rundunar soji B don tallafawa "Fall Blau" (Case Blue), "Wehrmacht" ta 1942 ta hanyar yaƙi a kudancin Rasha. A ranar 5 ga Yuli, 1942, II./JG 77 ya kasance a Kastornoje, kusan yamma da Voronezh, inda ya yi yaƙi a yakin Voronezh
Ka yi haƙuri. Setz ya ba da umarnin II./JG 77 a cikin watan Yuli don "Gruppenkommandeur" (shugaban rukuni) Anton Mader. Ya yi iƙirarin MIG-3s biyu a ranar 23 ga Yuli 1942. Kashegari, 24 ga Yuli, ya kai nasararsa ta 100 a sama. Shi ne matukin jirgi na 13 na Luftwaffe don cimma alamar karni. Wannan nasarar ta sa ya sami Gicciye na Jamusanci a Zinare () wanda aka ba shi a ranar 21 ga Agusta 1942. A ranar 16 ga Satumba, Setz, a karo na biyu, ya zama "ace-in-a-day" bayan da ya yi ikirarin lalata jirgin saman yaƙi na LaGG-3 guda uku da jirgin sama na Ilyushin Il-2 guda biyu, wanda ya kai ga nasararsa ta sama zuwa 133. Setz yana da 4. "Staffel" sannan aka sake sanye shi da Bf 109 G-2 kuma aka tura shi zuwa filin jirgin sama a Stary Oskol a ranar 23 ga Satumba 1942. A ranar 2 ga Oktoba, 4. Kuma shida. "Staffel" ya tashi a cikin jirgin sama na jirgin sama na Heinkel He 111 wanda ke kai hare-haren Soviet a arewacin Voronezh. A wannan aikin, Setz ya yi ikirarin LaGG-3 guda biyu, nasararsa ta ƙarshe a Gabashin Gabas. Wannan ya dauki jimlarsa zuwa 135 nasara a cikin iska. An gabatar da Setz zuwa "Hauptmann" a ranar 1 ga Nuwamba 1942. A ranar 7 ga Nuwamba, 1942, II. "Gruppe" ya karbi umarni daga "Major General" Alfred Bülowius, kwamandan na 1. "Flieger-Division" (1st Air Division), don sake komawa zuwa wasan kwaikwayon wasan kwaikwayon Arewacin Afirka.