Kammala wannan jumla: A ranar 6 ga Afrilu 1941 Jamus, Italiya, Hungary, da Bulgaria sun mamaye Yugoslavia, kuma Luftwaffe
sun yi wa Belgrade bam na kwana uku suna kashe mutane 17,000. Belgrade ya kama sojojin Jamus a ranar 13 ga Afrilu, 1941, kuma bayan kwana hudu a ranar 17 ga Afrilu, 1941, Rundunar Sojojin Yugoslavia ta mika wuya ba tare da wani sharadi ba. Da yake bin shawara da kuma baƙin ciki, Sarki Peter II ya bar ƙasar don neman goyon bayan Allies. An gaishe shi a matsayin gwarzo wanda ya kuskura ya yi adawa da Hitler. Gwamnatin Yugoslav ta Royal, ita ce kawai ƙungiyar shari'a ta Yugoslavia, ta ci gaba da aiki a London. Ƙasashen Axis masu mamaye sai suka raba Yugoslavia. Yankunan yammacin kasar tare da Bosnia da Herzegovina an mayar da su cikin wani dan jarida na Nazi da ake kira Independent State of Croatia (NDH) kuma Ustashe ya mallake shi. Yawancin yankin Serbia na zamani sojojin Jamus ne suka mamaye shi kuma Gwamnatin Sojojin Jamus a Serbia ce ke mulkinta. An kira yankin da ake mulki Serbia ko Yankin Kwamandan Soja a Serbia, kuma, ban da masu gudanar da aikin soja na Jamus, gwamnatocin marigayi na Serbia ne suka fara mulki a karkashin Milan Aćimović sannan kuma a karkashin janar din sojojin Serbia Milan Nedić. Hungary ta haɗu da yankuna na arewa, kuma Bulgaria ta haɗu da yankuna na gabas da kudu. Kosovo da Metohija galibi Albania ce ta haɗu da ita wanda ke ƙarƙashin tallafin fascist Italiya. Montenegro kuma ta rasa yankuna zuwa Albania sannan sojojin Italiya suka mamaye ta. An raba ƙasar Slovenia tsakanin Jamus da Italiya, waɗanda suka kuma ƙwace tsibirai da ke Tekun Adriatic.