Slitherine

quote:

ORIGINAL: Xenocide

In general Germany and Italy cannot use Japanese ports or supply sources vice-versa.

There is an even in 1944 (I believe to make the port of Penang into a German port. Once this is done it cannot resupply Japanese ships. Realistically it makes sense. Japan had almost no way to get the parts Germans would need to fix and resupply their ships. Germany and Italy could. The USA and the British could.

This can lead to oddities. I launched a German and Japanese invasion of the Soviet Union and forced their surrender. I took the option to divide the territory between Germany and Japan but this left a Japanese army group unsupplied and they had to slowly march back to Japanese territory.

quote:

ORIGINAL: Simulacra53
Food and fuel should not fall under that category.
Ammunition yes, unless you are lucky enough to share specific ammo types
Parts, speciality parts yes, but general parts or fitting substitutes no.

So it very much depends on what kind of resupply we are talking, fuel and food supplies would be the least difficult.
Minor repairs requiring general tooling and parts also not a big deal.

The question is major repairs and replacements.
A Japanese division under German comtrol could best change to German weapons and equipment and vice versa.

In reality Germany managed to operate German subs in the far east, partly with German supplies, so you could calculate that into the equation.
We are probably talking game limitations here, more than real life limitations.