ACW Supply

[2-81 Armor]

I have a question regarding both small arms (wagons) and artillery supply for super long scenarios like The Seven Days in Campaign Peninsula, or the mega-monster in Campaign Overland.

I understand wagons supply 10 men per point expended at a range of up to 5 hexes. Usually games have one wagon per division.

What happens if after say, 3 days of fighting a division's wagon expends all of it's points? The rules say empty wagons are removed from the game. This makes sense, but what happens after that? I know any wagon can supply any unit regardless of which division or corps they belong to, but let's assume they all somehow go dry. Are units then permanently out of ammunition for the rest of a super long scenario, or do new wagons appear as reinforcements? The rules (too me at least) are not clear here. I haven't noticed anything at all that addresses this. Can anyone advise?

For artillery my understanding is that depending on optional rules, a supply point can be per gun or per battery. No problem there, but in a super long scenario how would a designer calculate the at start totals?

I've done a little research, and it appears that with the Union Army, artillery ammunition loads were calculated at 128 rounds per gun within a battery (carried in caissons, limber chests, and wagons). There were supposed to be a further 250 rounds per gun in the artillery trains, and yet another 125 with the reserve trains.

I think if an Army's gun total was multiplied by the total number of rounds allocated per tube, that might be accurate but pretty big. To calculate by battery, maybe take the per tube grand total and divide by 4 or 6 depending on battery size?

With all that, how have artillery levels been arrived at? To me (and I could be wrong !), it looks like they are too low in long scenarios, and there is a major risk of running dry, especially with scenarios that last for a long time.

Like I say, I could be wrong, but can any insiders or designers shed a little light on this?

I do apologize ahead of time if I've overlooked anything that is already in the game manuals.