 Rambai muchinyora ndima ino - Mushure mekukunda muWWI maSerb akaumba Humambo hweSerbs, maCroats nemaSlovenes nevamwe vanhu veSouth Slavic. Nyika yakazotumidzwa zita rokuti Umambo hweYugoslavia, uye yakatungamirirwa kubva muna 1921 kusvika muna 1934 naMambo Alexander I weSerbian Karađorđević dynasty. MuHondo Yenyika II, Yugoslavia yakapinda neAxis powers muna April 1941. Nyika yacho yakakamurwa kuva zvikamu zvakawanda, neSerbia ichigara zvakananga nemaGerman. VaSerb muIndependent State yeCroatia NDH vakanangwa kuti vaparadzwe sorutivi rwegandanganeCroatian ultra-nationalist, fascist Ustaše. Maonero eUstaše echizvarwa uye echirudzi, pamwe nedzidziso yevaSerb serudzi rwakaderera, yaive pasi pesimba revaCroatian vezvematongerwo enyika uye vakadzidza kubva pakupera kwezana ramakore rechi19 nekutanga kwezana ramakore rechi20. Musasa weJasenovac wakanga une mukurumbira wakashata nokuda kwemitoo youtsinye yakaitika mauri. Misasa yevasungwa yeSisak neJastrebarsko yakaumbwa zvikurukuru nokuda kwavana. VaSerb muNDH vakatambura pakati pehuwandu hwevanhu vakafa muEurope munguva yeHondo Yenyika II, nepo NDH yaive imwe yehurumende dzakauraya kwazvo muzana ramakore rechi20. Diana Budisavljević, mutsigiri wevanhu anobva kuAustria, akaita basa rokununura kubva mumisasa yeUstaše uye akaponesa vana vanopfuura 15 000, vakawanda vavo vaiva vaSerbia. 