The New Guinea campaign was a key element of the Pacific War with lots of island hopping. The Japanese lands on the island and entrench themselves there early in 1942. They attack Milne Bay with an amphibious force, but they are beaten back by allied forces. Australian forces drive across the mountainous island and eventual meet up with U.S. soldiers. Slowly, they move through the northern part of the island defeating the Japanese at Lae and the Bismarck Sea.