P.T.O. Japan has the logistical and offensive advantage at the start of the game, but lacks the resources and raw materials to keep up a sustained war effort. The Allies lack logistical and tactical advantages but have access to resources and material to fuel a sustained military effort once their industrial potential is harnessed. Technology is critical. Midway, Wake, Truk, and the Marshall islands are crucial mid-Pacific bases. You must also have sufficient materials at bases where ships may be repaired.
Freighters attached to fleets extend the range of that fleet by increasing total fuel capacity.
Troops, Fuel, material, and aircraft are critical to base defense. Bases will not take direct orders but will use Fighters and Bombers for defense and attack if they are available. Bases which have Long Range Bombers will execute bombing strikes against enemy forces if they are supplied with sufficient quantities of fuel. Long Range Bombers are effective against inland bases and will be used to take them. You must have control of a nearby coastal base in order to supply an inland base.