By 1941 and the run up to war the US had several dozen bases across the 1/2 of the world represented by the Pacific. Everything from the great fleet base at Pearl, to smaller outposts like Wake or Guam and the Philippines, to outposts in paradise like Pago Pago.

What kind of base does it need to be, how big, what king of facilities, US/European Men and women present, any natives? Does it have to have routine and large amounts of ship traffic, or a tiny speck of coral with a shallow harbor and an rough airstrip?