Command tests: Base chance = global or local supply?

[CheerfullyInsane]

I'm no expert on the systems in the JTS games, but I think you're right.

Take a look at p.74
"In scenarios where Supply Sources are used, these values take precedence over that side’s Global Supply Value for non naval units on the map."

"When supply issues are being resolved for a unit in a given hex, the Local Supply Value that applies to that hex is used. If there are no Supply Sources in the scenario for that side, then the Global Supply Value is used for this purpose."

So Global Supply is only used in scenarios without supply-sources, or for naval units.