Hi Longshanks
It appears to me to have to do with how cities/towns are selected for building which type of factory. At the beginning of the full campaigns Indianapolis (size 5) is the largest city in Indiana and is already building 5 or 6 WS. Much later after much industrialization, even level 3 for a number of turns, Columbus IN (size 3) also had started producing WS. The other size 3 cities in IN are Fort Wayne and Evansville never did. It might be that Columbus was selected for WS production because of it's relative proximity to Indianapolis (only 2 regions away) while Fort Wayne is 3 regions away and Evansville 4. It might also simply have been random chance.
When I quit the game the largest towns/cities (size larger that 1) were producing:
[table="width: 500, class: grid"]
[tr]
[td]Town/City[/td]
[td]Size[/td]
[td]WS[/td]
[td]GS[/td]
[td]Ammo[/td]
[/tr]
[tr]
[td]Indianapolis[/td]
[td]5[/td]
[td]43[/td]
[td]215[/td]
[td]50[/td]
[/tr]
[tr]
[td]Columbus[/td]
[td]3[/td]
[td]6[/td]
[td]107[/td]
[td]11[/td]
[/tr]
[tr]
[td]Fort Wayne[/td]
[td]3[/td]
[td]0[/td]
[td]101[/td]
[td]28[/td]
[/tr]
[tr]
[td]Evansville*[/td]
[td]3[/td]
[td]0[/td]
[td]103[/td]
[td]60[/td]
[/tr]
[tr]
[td]Rome*[/td]
[td]2[/td]
[td]0[/td]
[td]99[/td]
[td]26[/td]
[/tr]
[tr]
[td]New Albany*[/td]
[td]2[/td]
[td]0[/td]
[td]38[/td]
[td]17[/td]
[/tr]
[tr]
[td]Madison*[/td]
[td]2[/td]
[td]0[/td]
[td]223(!!)[/td]
[td]30[/td]
[/tr]
[/table]
* Towns/Cities on the Ohio River
From what I remember seeing, if a factory producing WS was built, the increase was 3 WS, but I've seen factories built in one town/city in one turn that increased GS or Ammo output up to about +25! albeit rarely.
Barring the unveiling of the industrialization algorithm I'll not worry about it anymore.
It might be useful to industrialize in Arkansas as the South because of the lengthy transportation line to the front in '61 and '62, and because Little Rock and Madison are the only towns that will probably get the upgrade. But then again they are destine to eventually fall so that investment can only be viewed as a temporary gain, if it comes through, which is then taken over by the Union. I think the resources can be better put to use to actually build the artillery in the neighboring region and rail it up to Memphis and then send it by transports to Fort Smith or Ozark Harbor.
You don't miss out on building those artillery batteries and ironclads just because you don't build them in their commissioning state. They are simply built in their alternate region. You have to look at the actual unit_type.uni file in ..\ACW\GameData\Units\ to find that out, but for Missouri and Arkansas it's the South_West grand region which is Texas and Louisiana and since artillery is, from my experience, built in the largest towns/cities they will almost always be built in New Orleans.
The couple of ironclads that I build from Indiana were built in Detroit. It's a long ride around the Michigan lower peninsula, but you only make it once. Anyway, there's a whole slew of them to be built in Missouri, Illinois and Kentucky before I'd have to start thinking about building the Indiana ironclads. Ohio is a bit questionable. Gunboats like to be built up on Lake Erie, but most of the ironclads that I remember building landed in Cincinnati, so that's okay. I don't remember ever having build Pennsylvania ironclads, but I've built a lot of monitors in PA and they almost always land in Philadelphia, so I imagine that the ironclads would land in Pittsburgh. Just start building them in early spring so that in the worst case they have time to sail around to their actual deployment area.