Na-atụ egwu iyi egwu sitere na Imperial Japan n'oge Agha Worldwa nke Abụọ, United States na-anọpụ iche n'oge ahụ malitere ime ka Dutch Harbor sie ike na 1940, na-ebute owuwu nke Dutch Harbor Naval Operating Base na Fort Mears nke a rụchara kpamkpam na Septemba 1941 ọnwa atọ tupu mwakpo mberede na Pearl Harbor nke mere ka US banye agha. Na June 3, 1942, ndị agha ụgbọelu Japan wakporo obodo ahụ n'Agha Dutch Harbour
, bụ akụkụ nke mkpọsa nke Aleutian Islands. Mgbe mwakpo ahụ na ndị Japan weghaara Kiska na Attu, ihe fọrọ nke nta ka ọ bụrụ ndị niile bi n'agwaetiti Amaknak gbapụrụ. A kpọchiri ọtụtụ n'ime ha n'ogige dị n'ebe ndịda ọwụwa anyanwụ Alaska n'oge agha ahụ, n'ọnọdụ ndị jọgburu onwe ha; ọnụ ọgụgụ dị ukwuu nke ndị mkpọrọ ahụ nwụrụ n'oge a tụrụ ha mkpọrọ.