Mezue ahịrịokwu na-esonụ: N'April 6, 1941, "Luftwaffe" nkeji na Bulgaria na Romania wakporo Yugoslavia n'oge
Igbu Belgrade na bọmbụ. N'ịbụ ndị nwere ngwakọta nke akụrụngwa ochie na ụgbọ elu ọhụrụ ka na-abanye n'ọrụ, a manyere VVKJ ịgbachitere oke ala nke mba ahụ megide ọtụtụ mwakpo sitere n'ọtụtụ ụzọ. Iguzosi ike n'ihe nke ụfọdụ ndị agha na-esighị ike emeghị ka ihe ka mma. Ugbo elu ndị agha Yugoslav na ndị agha ụgbọelu na-egbu ụgbọelu gburu ihe dị ka ụgbọ elu 90/100 nke ndị iro, mana ndị agha na-agbachitere enweghị ike imetụta ọganihu nke ndị iro. N'oge mwakpo nke ụgbọ elu German na Niš Airport Medoševac na 6 Eprel n'ihe dị ka elekere 08:00, ọkụ sitere n'ala gburu ụgbọ elu nke German fighter ace Herbert Ihlefeld. Captain Ihlefeld, onye e nyere otuto maka ihe karịrị mmeri iri anọ n'elu ikuku, bụ onye Corporal Vlasta Belić gburu, na-agbapụ egbe egbe Darne, caliber 7.7 mm, nke e si na Yugoslav Breguet 19. N'ịbụ onye a gbagburu n'ebe a na-etinye mmanụ, injin nke Bf 109 kwụsịrị, a manyekwara onye ọkwọ ụgbọelu ahụ ịhapụ ụgbọelu ahụ. O ji parachute gbapụ ihe dị ka kilomita 35 n'ebe ndịda ọwụwa anyanwụ nke obodo Nis. Ndị Serbia bụ́ ndị ọrụ ugbo jidere onye Germany ahụ na-agba ọsọ ma nyefee ya n'aka ndị uwe ojii. N'April 17, 1941, gọọmenti Yugoslavia chịliri aka elu. Ọtụtụ ụgbọ elu VVKJ gbapụrụ Ijipt site na alaeze Gris, ndị ọrụ ahụ wee jee ozi na British Royal Air Force (RAF).