Kammala jumla mai zuwa: A ranar 6 ga Afrilu, 1941, Masarautar Yugoslavia ta mamaye dukkan bangarorin da ikon Axis, galibi ta sojojin Jamus, amma har da rukunin Italiya, Hungary da Bulgaria. A lokacin mamayewa,
Belgrade ta yi ruwan bama-bamai da "Luftwaffe". Harin ya ɗauki fiye da kwanaki goma, ya ƙare tare da mika wuya mara izini na Royal Yugoslav Army a ranar 17 ga Afrilu. Baya ga rashin wadatar kayan aiki idan aka kwatanta da Wehrmacht, Sojojin sun yi kokarin kare dukkan kan iyakoki amma kawai sun sami damar rarraba iyakantaccen albarkatun da ke akwai.