Kammala jumla mai zuwa: Tsoron barazanar daga Imperial Japan a lokacin Yaƙin Duniya na II, Amurka da ke tsaka tsaki a lokacin ta fara ƙarfafa Dutch Harbor a 1940, wanda ya haifar da ginin Dutch Harbor Naval Operating Base da Fort Mears wanda aka kammala gaba ɗaya a watan Satumbar 1941 watanni uku kafin harin ba zato ba tsammani a kan Pearl Harbor wanda ya sa Amurka ta shiga yaƙin. A ranar 3 ga Yuni, 1942, sojojin sama na Japan sun kai wa garin hari a cikin
Yaƙin Dutch Harbor, wani ɓangare na Kamfen na Tsibirin Aleutian. Bayan harin da kuma mamayar Japan na Kiska da Attu, kusan dukkanin mazaunan tsibirin Amaknak sun kwashe. Da yawa an tsare su, a cikin mummunan yanayi, a sansanonin da ke kudu maso gabashin Alaska na tsawon lokacin yakin; adadi mai yawa na fursunoni sun mutu yayin da suke kurkuku.