Dee ihe na-aga n'ihu na paragraf a - N'oge a, ọjụjụ Yugoslavia jụrụ isonye n'ogige Axis kpasuru Hitler iwe. Gọọmentị Yugoslavia n'okpuru Regent Prince Paul bụbu onye na-akwado isonye na Germany. Ma otu "nchịkwa ọchịchị" kwaturu ọchịchị ahụ, chụtuo Onyeisi, ma mee nwa okorobịa ahụ dị afọ iri na ụma bụ́ Peter nke Abụọ eze. N'ịzaghachi nke a, Hitler nyere iwu ka a wakpo Yugoslavia, "Operation Punishment" ("Strafgericht"). N'oge bọmbụ ahụ a tụrụ na Belgrade
, e bibiri ebe etiti isi obodo Yugoslavia ma gbuo mmadụ 15,000 ma mee ka ha ghara inwe ebe obibi. Bọmbụ ahụ bidoro n'ụbọchị isii nke ọnwa Eprel ma gaa n'ihu ruo ụbọchị anọ ruo ụbọchị iri nke ọnwa Eprel.