Mezue nkebi ahịrịokwu a: Ọnụ ọgụgụ nke ndị na-eme ihe ngosi mụbara n'ihe ngosi nke abụọ na nke atọ, bụ́ ndị e mere na 1939 nakwa na 1940. N'agbanyeghi ntiwapụ nke Agha Worldwa nke Abụọ, ndị na-eme ihe ngosi si Germany, Italy, United States, Protectorate nke Bohemia na Moravia. Ọ bụ ụgbọala ndị nwere injin na-eji gas osisi arụ ọrụ ka a na-ewu ewu karịsịa. Emere ihe ngosi nke anọ, nke e mere atụmatụ maka May 1941, ka a kagbuchara mgbe ndị Germany wakporo Yugoslavia, nke gụnyere nnukwu ihe ngosi nke ndị Germany na-eme ihe nkiri.
bọmbụ nke Belgrade, malitere na 6 Eprel 1941.