Bishii Abriil 1940 Jarmalka ayaa Norway ku soo duulay si ay u helaan saldhig ay ku weeraraan ciidamada badda ee Waqooyiga Atlantic, iyo si ay u xaqiijiyaan shixnadaha birta laga keeno Sweden iyagoo maraya dekedda Narvik. Inkastoo maraakiibta la isticmaalay aysan ka soo dejin Basis Nord, markabka sahayda ee "Jan Wellem", oo muhiim u ah howlgalada Narvik
waxaa laga soo diray Saldhigga Waqooyiga. Ma jirin doomaha Jarmalka ee U-boats-ka ama maraakiibta dagaalka ee dusha sare laga keenay oo laga keenay saldhigga waqooyiga.