Dagaalkii Badda Bismarck ee bishii Maarso 1943 waxaa lagu dagaalamay isku daygii Japan ee ahaa in Lae lagu xoojiyo ciidamo laga soo diray Rabaul, isku daygaas oo lagu fashiliyay weerarkii joogtada ahaa ee Allied ee lagu qaaday ciidamada Japan. Bartamihii 1943, guuldaradii ka soo gaartay dagaalkii Kokoda Track
Ciidamada Japan ayaa dib ugu laabtay Lae iyo Salamaua. Si kastaba ha noqotee, ololihii Salamaua<unk>Lae wuxuu ku lug lahaa toddobaadyo badan oo dagaallo adag ah, ka hor inta aysan magaalada u dhicin Allies-ka 16kii Sebtember.