Play as Imperial Japan.
Select Marianas Is.
Throw all your ships in a TF : 4CA + the SNLF.
Set the TF to invade Tarawa (or whatever)
Save the game.
Click GO.
Wait for the new turn.
In the main menu, select "Load Game" and reload your saved turn on December 41.
- Marianas Is. have a new "bonus" SNLF5 In Port
- The path between Marianas & Tarawa no longer shows (although the Invasion marker is still set up near Tarawa)