You should check out Ian Toll’s Pacific Trilogy. The writing is exceptional. The first volume, Pacific Crucible, contains great stories about FDR making cocktails for Churchill when he visited the White House for a few weeks in early 1942. For some reason, the Pacific War never received the attention that the European theater did. It was a titanic struggle in which the US did most of the heavy lifting, with help from Australia and NZ. At one point there were 1 million US servicemen in Australia.