Cika wannan jumla: A watan Yuni na 1942, a matsayin wani ɓangare na Jafananci
Tsakanin hanya, Jafananci sun kai hari kan tsibirin Aleutian, a kudancin Alaska. Tadayoshi Koga, wani matashi mai shekaru 19 mai shekaru 19, an kaddamar da shi daga jirgin sama na Japan "Ryūjō" a matsayin wani ɓangare na harin 4 ga Yuni. Koga na daga cikin sassan jirgin sama guda uku. Magoya bayansa sune Babban Jami'in Makoto Endo da Jami'in Tsuguo Shikada. Koga da sahabbansa sun kai hari kan Dutch Harbor, suna harbe wani jirgin ruwan Amurka mai suna PBY-5A Catalina wanda Bud Mitchell ke tukawa kuma ya kashe wadanda suka tsira a cikin ruwa. Hare-hare uku da suka biyo baya sun kashe ma'aikatan PBY. Koga ya mutu lokacin da jirginsa ya lalace a tsibirin Akutan.