 Nyorai kupfuurira kweiyi ndima - Apo Hungary, Bulgaria neRomania zvakabatana neTripartite chibvumirano muna 1940, dzvinyiriro yakawedzera zvikuru paYugoslavia kuti ibatanidzwe sezvo Hitler akanga achiedza kudzivirira rutivi rwayo rwokumaodzanyemba asati atanga kurwisa Soviet Union. Kusayina Chibvumirano cheHumambo hweYugoslavia neGermany musi waMarch 25, 1941, kwakateverwa nemazuva maviri gare gare nehurumende yakatungamirirwa nemukuru wezvikepe Dusan Simovic. Muchinda aiva mutongi Pavel akadzingwa uye simba rakapiwa Petro muduku. General Simovic akatora mutoro wokutarisira kwechinguvana hurumende. Nokudaro, Yugoslavia yakaratidzika kuva isingavimbikizve kuna Hitler, uye nokudaro pana April 6, 1941, mukuwirirana neOperation Marita uye pasina ziviso yapamutemo yehondo, mauto eAxis akapinda muUmambo hweYugoslavia. Kurwisa kwacho kwakatanga nokuputika mabhomba kweBelgrade, kwakauraya vanhu 20 000. Kuramba kweuto reumambo reYugoslavia kwaingova kwekufananidzira, sezvo hafu chete yevakatsvaga vakakwanisa kuunganidza nekuda kwekunonoka kuunganidzwa, uye zvishandiso zvemauto nedzidziso yeSerbia kubva kuhondo dzeBalkan neHondo Yenyika Yekutanga zvaive zvisingachashandi. Nokudaro, pana April 10, mauto eGermany akanga atosvika muZagreb uye pana April 12 muBelgrade. Mauto eItaly akatanga kurwisa musi waApril 11, apo Hungary yakabatana. Panguva iyoyo, uto reGermany rakanga ratova muKarlovac. Mauto eItaly akakamukana kuita zvikamu zviviri: yakapinda muchikamu chakananga kuLjubljana nekupfuura neKočevje, uye chikamu chechipiri chakapinda neDalmatia. Mauto eGermany akabudawo muBulgaria uye nemapoka akaunganidzwa akavharira nyore nyore kubviswa kweuto reYugoslav kuenda kuTesaloniki pamberi. 