From 10–19 September 1942, Wilcke claimed another series of victories over aircraft of unknown type, which included one on 10 September, one on 12 September, four on 18 September and two on 19 September. On 16 September 1942, the Soviets launched an offensive north of Stalingrad. Wilcke led about 40 serviceable German fighters against the Soviet 8 "Vozdyshnaya Armiya" (8 VA—8th Air Army), 16 "Vozdyshnaya Armiya" (16 VA—16th Air Army), and 102 "Istrebitel'naya Aviatsionnaya Diviziya Protivo-Vozdushnaya Oborona" (102 IAD PVO—Fighter Aviation Division of the Home Air Defense) over Stalingrad. At the time, Wilcke often flew with "Hauptmann" Walther Dahl as his wingman. On 20 September 1942, Wilcke shot down two LaGG-3s. Two days later, he shot down six Yakovlev Yak-1 fighters over Stalingrad, his third "ace-in-day" feat, taking his total to 116 aerial victories. It is possible that one of his opponents was "Leytenant" (Second Lieutenant) Nikolai Karnachyonok of 434 "Istrebitel'nyy Aviatsionyy Polk" (434 IAP—434th Fighter Aviation Regiment), who was killed in action that day and was posthumously made a Hero of the Soviet Union.