Well, the Pacific side of the story was a bit draggy after all... how many islands does one have to hop to get to Japan, anyway? And who can tell the difference between all those places - "Ooh, I remember Iwo Jima! That's the one with the palm trees, right?"
To be honest, I was getting kind of tired of the whole thing by then. Might as well bring out some superweapon if all the audience is going to get is lookalike island after lookalike island - just end it and put everybody out of their misery.