 Nyorai kupfuurira kweiyi ndima - Manheru aAugust 25, 1942, vaJapan vakaita kumhara paMilne Bay, pamugumo wokumabvazuva kweNew Guinea, kuderedza nhandare dzendege dzeAllied dzakanga dzasimbiswa ikoko. Pasinei nokubudirira kwokutanga, simba racho rakazoparadzwa nevaAustralia nevakapona vakamanikidzwa kubuda mugungwa musi wa 45 Gunyana. Zvichakadaro, munguva iyi Horiis South Seas Detachment yakanga yaenderera mberi nekufambira mberi kwakasimba pamwe neKokoda Track. Pashure pokunge vaJapan vatangazve kuenderera mberi kwavo musi wa 26 August vaAustralia vakagadzira nhevedzano yezviito zvinononoka vasati vadzokera kuEora Creek musi wa 30 August, Templetons Crossing musi wa 2 September, uye Efogi mazuva matatu gare gare. Kunyange zvazvo kurwisa kweAustralia kwakanga kuchipfuurwa nenhamba kwakanga kuchiva kunobudirira zvikuru uye vaJapan vakanga vachitanga kunzwa kunetseka kwokutambanudza mutsara wokugovera, vadziviriri vakanga vachiwedzera kuneta uye kuderedzwa nechirwere nechirwere somugumisiro wokushanda kwavo nesimba uye nzvimbo yakaoma. Potts akaendesa kutungamira kuna Porter musi wa 10 Gunyana, uyo akazoenda kuIoribaiwa, achitarisa kurwisa kweJapan ikoko zuva rakatevera. Nemapurisa aAllens 7th Division zvino achisimbisa Maroubra Force, PIB yakarongedzwa mumapoka evatakuri vematanda uye yakapiwa basa rekubvisa varwere nevakakuvadzwa varwi veAustralia kumashure pamwe neKokoda Track. Musi wa14 Gunyana kutungamira kwenzvimbo dzepamberi kwakatorwa naBrigadier Kenneth Eather. 