Supply rule options.
First option is None. 
Second Panzer General/Allied General old rules. Units use up gas, and ammo. Just click supply button when needed.
Third - Major/Primary cities are supply sources. Unit must be within 25 truck movement hexes to use it's supply button.
Fourth - A city must be in a group of at least 10 other major cities to be considered a Supply Source. 
         These cities supply other cities, and depots within 25 truck movement points. 
		 Those in turn supply other cities, depots. Extening the chain as far as possible.
		 (I like this rule the best, but it can take a while to process all the chains.)
Fifth - I have turned this off for now. I like the fourth better, but this was a Depot based rule.
        Each point of Gas, Ammo, and Food was collected from a city. Combined into piles (depots) and 
		moved toward the units needing it.  This was a bit too detailed I thought, and pretty much
		became a game in itself.

I think I would play with the Third (Major Cities) to get started. But try the fourth out later.
