Nyorai kupfuurira kweiyi ndima - PURPLE yakanga iri inokwezva, asi yakanyatsogadziriswa, hwindo muJapan kuronga uye mutemo nekuda kwechimiro chakasiyana cheJapan chemaitiro asati aenda Hondo (ona pamusoro apa). Pakutanga, nzira iri nani yokushandisa yaiva yeJapan Fleet Code (chiverengero chakarongwa), yainzi JN-25 nevashandi veU.S. Navy vanoongorora mashoko anokosha. Kupinda mushanduro yaishandiswa mumwedzi yakatevera December 7, 1941 kwakapa mashoko akakwana okutungamirira kukunda kwezvikepe zveU.S. muhondo dzeCoral Sea
uye Midway, kumbomira kufambira mberi kwokutanga kweJapan kumaodzanyemba uye kubvisa chikamu chikuru chesimba remhepo rengarava reJapan. Gare gare, kufamba kweJN-25 kwakakanganiswa kwakagoverawo purogiramu uye nzira yendege Admiral Isoroku Yamamoto yaizobhururuka mukati mekushanya kwekuongorora kumaodzanyemba kwakadziva kumadokero kwePacific, ichipa vatyairi veUSAAF mukana wekurwisa mukuru uyo akanga afunga kurwisa Pearl Harbor. Uye gare gare, kuwana mashoko ehondo yeJapan kubva pakunyorwa kwemashoko ehondo ehondo kwakabetsera mukuronga nhimbe yokutsika-tsika kuzvitsuwa kuenda kuPhilippines nokumwewo.