Mezue ahịrịokwu na-esonụ: N'etiti March 1941 III./KG 3 mere site na France ruo Münchendorf, Austria ma mee ọzụzụ ọzụzụ site na 27 ruo 29 March 1941. Ndị otu ahụ nwere Dorniers iri abụọ na asatọ, na 26 ndị dị njikere ịlụ ọgụ na Junkers Ju 88s atọ. E debere ya n'okpuru iwu nke Luftflotte 4 n'okpuru iwu nke Alexander Löhr ruo 5 Eprel. Òtù ahụ kwadoro mwakpo a wakporo Yugoslavia, ma tinye aka na mwakpo nke ndị agha Yugoslavia.
bọmbụ nke Belgrade na 6 April. 102 Do 17s, na-ebu 18 SC 50 kg (110 lb) mgbawa mgbawa, na 2 AB 36 cluster bombs wakporo isi obodo ahụ. Ihe dị ka 82 Do 17s nọgidere na-arụ ọrụ mgbe ụbọchị mbụ gasịrị, na naanị otu mkpesa na-efu, igwe KG 3. Isi mmalite ọzọ kwuru abụọ; ha abụọ sitere na 8 "staffel". Mgbasa ahụ kwụsịrị na Eprel 18, na mmeri ngwa ngwa nke Axis.