The Pacific Ocean was a major theater of World War II. How did occupation by Japanese/American forces, as well as the battles fought between these powers, affect the various peoples of the Pacific Islands? Did Pacific Islanders play any role in the war?
I'll just link a couple of previous responses I've written (I think these are both on the FAQ, though there may be other responses I've forgotten). [What did Islanders do?] (https://www.reddit.com/r/AskHistorians/comments/451wwx/what_did_the_pacific_islanders_do_in_ww2_when/czv668p/) and What did Islanders think?
TL/DR : it depends on the island, if you are just curious in general or thinking more about the islands that experienced heavy fighting or bombing during the war.
YMMV between islanders in places like Hawaii or Tahiti who fought in the European and Pacific fronts from the US and France respectively; to those on Chuuk who were conscripted by the Japanese and bombed by Americas; or Papua pathfinders and scouts, or occupied islands like Guam. Different islands had different levels of integration with the colonial powers of the Pacific, often based off the racial bias of the colonial power, and that often played a major role in just how aware and participatory any given islander might be.