OLD SUPPLY ESSAY FROM AACW: http://www.ageod-forum.com/showthrea...hlight=waiter:
First, read the Supply Primer so handily stickied.
Now, in a nutshell (I know the Union; the Southern mileage may vary):
Let's take a certain unit you get in southern PA in a 61 start. At first it is locked. It stays locked for about two turns. Then it unlocks. Then you click it to move it and discover that your brand new brave boys, rarin' to go, are starving to death. In Pennsylvania. In the summer.
This is because (a) no Wagon; (b) not next to, or on, a town or city, a Depot. The system knows the unit is there; the system wants to give them supplies, ammo, and so forth, but it can't, because of (a) and (b) just mentioned.
Depots, Forts, Towns of size 3+, Wagons and Transports request Supply. Towns of less than size 3 generate small amounts of Supply, but never request it. The system is a network of pipelines: NYC, Philly, Chicago, etc., generate huge amounts that are pushed along the system of RRs and Roads and Rivers not interdicted by Bad Guys (i. e., MC of 25% or more, not subject to enemy Forts blocking riverine traffic, etc.). The Supply goes to them who ask for it - them's that asks, git.
So you need to be adjacent to, or on, a source of supply, or something that requests supply. If that something is not a fixed Fort, Depot, or 3+ Town/City, it had better be a Wagon or a Transport, cuz otherwise, the waiter ain't takin' your order.
Also, it is important to keep RRs and Rivers up to 100%, Full Capacity, cuz Supply is pushed in three phases and only goes the last mile (like your cable connection at home) if the third and final phase is up to snuff. You can get by with Average, but some guys might not get that extra helping of beans at dinner, cuz the third phase never got to them that turn.
I finally drew the conclusion that if I want to go Reb hunting, I had better darn well make sure I took a Wagon with me. Fire up a 62 start as the USA and check out Burnside, sunning himself on the shore in SC. Go thru two Turns, maybe three. Then check out Burnside - he is about to go poof!, because you didn't build a Depot - Beaufort, SC, is not a 3+ Town, there is no Fort, no Depot. You can park Transports there, that do request Supply, but they will not do the trick, they're too small a capacity, it doesn't work, I know, believe me, I know. The solution to the 'overseas' Burnside problem is to build a Depot there with a Transport unit(s). Then everyone's much happier and has something to eat and something to shoot, cuz the system says, "Hey! I gotta keep that Depot in Supply!" The Shipping Box plays an essential role in this case, BTW.
It's a rough sketch and I'm sure Gray and others could iron out some details, but that's I how I think of it - seems to work.
Goin' huntin'? Take a Wagon. Goin' down Ole Man River to squash Vicksburg? Take Wagons and Transports. Goin' over the seas to land in Mobile and surprise Johnny Reb big time? Wagons and Transports.
Pushin' towards the interior from Nashville? Seize every town and Depot you see, secure your RRs, assert MC and keep the lines open, cuz you gotta keep your Wagons stocked.
Hope that helps. Have a good war and have a good breakfast.