Kammala wannan jumla: "Luftwaffe" ta ba da "Luftflotte 4" ga mamayewar. An haɗa shi a cikin ƙarfinsa KG 2 da KG 3, kawai "Kampfgruppe" a cikin karfi na bakwai sanye da Do 17. Daga cikin Jamusanci "Kampfgruppen", kimanin 110 Do 17s aka yi. Ƙungiyar
An fara kai hare-hare na farko a Belgrade a 0651 a safiyar ranar 6 ga Afrilu. Daga cikin 'yan kunar bakin wake na Jamus akwai 102 Do 17s, dauke da 18 SC 50 kg (110 lb) fashewar bama-bamai, da kuma 2 AB 36 bama-bamai. Wasu 82 Do 17s sun kasance masu aiki bayan rana ta farko, tare da asarar da aka ruwaito kawai, na'urar KG 3, WNr 2563 5K + DS. "Luftwaffe" da Dorniers za su sami halin da ake ciki a Girka, tare da 'yan adawa na iska. ya shiga cikin yakin Crete. I / KG 2 sun rasa Do 17s shida kuma bakwai sun lalace tsakanin 6 ga Afrilu da 31 ga Mayu. III./KG 2 ya ba da rahoton asarar shida da biyar da suka lalace a cikin wannan lokacin. III./KG 3 ya kuma shiga cikin hare-haren da aka kai a Girka da Crete.