Kammala jumla mai zuwa: Bey ya jagoranci rundunar jiragen ruwa na 4 na Destroyer Flotilla, wanda ya kunshi masu hallaka Z11 "Bernd von Arnim", Z12 "Erich Giese" da Z13 "Erich Koellner", a matsayin wani ɓangare na "Kommodore" Friedrich Bonte wanda ke dauke da sojojin dutse na Janar Eduard Dietl don mamaye Narvik a lokacin mamayewar Jamus na Norway a ranar 9 ga Afrilu 1940. A cikin wadannan
Yaƙe-yaƙe na Narvik a ranar 10 ga Afrilu da 13 ga Afrilu, Bey ya bambanta kansa ta hanyar jagorantar ƙaramin rukuni na masu hallaka a cikin ƙarfin hali duk da cewa an yanke masa hukunci game da ƙarfin Royal Navy wanda ya haɗa da jirgin ruwa.