brigades or regiments?

[JJPettigrew]

What size is the minimal unit?

Units in batle are mostly regimental in size  -by strenght and name - , but  at the campaign force composition screens they are called "brigades" 

 

 

[Koro]

The smallest brigade you can make is 500. The game doesn't really distinguish between regiment and brigade. Some troops that come on the battlefield are regiments from a brigade and can be combined to the brigade but in terms of functionality, only size matters.

Edit for some corrections from my phone.

[RookCW]

While it would be cool to see... 2nd NY or 16th Vermont on a battle map all the time. It would be harder and harder to control in the larger scenarios.

 

I like where it is now. 

[Legioneod]

I just give my brigades regimental names due to their size. 20th Georgia, 9th Louisiana, etc. It makes the units feel more special and it's cool to have a unit that has been with you through a ton of battles when you look at it's stats.

[Legioneod]

Another thing I'd think would be cool is to be able to see the regiments within a brigade. For instance in Hays Brigade I could list all the regiments that were in that brigade or make a new list of regiments that I want to be in that brigade. This is just for role play purposes but I think it would be cool to click on a brigade in the army camp and be able to edit the regiments or see the regiments listed in the brigade.