 Rambai muchinyora ndima iyi - Pearl Harbor isati yaitika, vaJapan vakanga vatotanga kuwedzera umambo hwavo muManchuria, 1931 Inner Mongolia, 1936 Jehol, 1933 China, 1937 uye mune dzimwe nzvimbo nezvitsuwa muHondo Yenyika I. Humambo hweJapan hwakapinda muHondo yeNyika II musi wa27 September, 1940 nokusaina Chibvumirano cheMatatu neGermany neItaly, uye kupinda kweJapan muFrench Indochina, kunyange zvazvo kwakanga kusiri kutozosvikira pakurwiswa kwePearl Harbor musi wa7 December 1941 apo U.S. yakapinda muhondo yacho. Mukati memaawa manomwe pakanga pane kurwisa kwakabatana kweJapan paFiripi, Guam neWake Island, Umambo hweNetherlands muDutch East Indies, Thailand uye paUmambo hweBritain muBorneo, Malaya neHong Kong. Vavariro dzokurwisa dzacho dzakanga dziri dzokuparadza ngarava dzeUnited States dzokuPacific, kutora minda yemafuta muDutch East Indies, uye kuchengeta nzvimbo yavo yokufurira yeChina, East Asia, uyewo Korea. Chakanga chiriwo chokuwedzera miganhu yokunze yoUmambo hweJapan kuti hugadzire nharaunda inodzivirira inotyisa yakapoteredza nharaunda yakanga ichangobva kuwanwa. 