Pedzisa mutsara unotevera: Mashoko eJapane musi wa9 April 1942 akaratidza kuti "RZP Campaign" yokurwisa Port Moresby yaifanira kuva kupamba kwete kurwisa nendege uye iyo yaizoparadzanisa Australia neAmerica. USN codebreaker Rudy Fabian pa FRUMEL akarondedzera MacArthur uyo aive "asingatenderi" sezvo aitarisira kuti chinangwa chaizove New Caledonia, saka Fabian akatsanangura (JN-25) kodhi-yekutyora maitiro uye akamuratidza mutungamiriri wechiJapan akabata meseji nechinangwa chekudzora mafambiro engarava yevavengi uye kurwisa mahombekombe ekuchamhembe kweAustralia. Naizvozvo kutakura kwaifanira kubva zuva rakatevera nokuda kweNew Caledonia kwakatumirwa kuPort Moresby. Musi wa 23 Kubvumbi Fabian akaratidza MacArthur kuti IJN yakanga ichiunganidza simba rakakura kuTruk, uye yakaronga kutora Tulagi zvakare. MacArthur akawana ndege yokuAustralia yokuongorora kuti "iwane" mauto okurwisa ePort Moresby musi wa5 May, zvichitungamirira ku
Hondo yeGungwa reCoral (ona Central Bureau).