From: Mosquito Bite, Texas
There's not much detail at all, at least not compared to some other games. You can buy special abilities for some units (i.e., brigade artillery, sharpshooters, etc.), and you can buy different weapons for units. But, these are not done unit by unit since the costs are high enough that you just seem to slowly upgrade over time.
The economy is highly abstracted and doesn't take very long to deal with. Most of my time is figuring out what I need to buy to keep my troops armed and happy.
I can usually play a turn (with one or two detailed battles), in a half hour or so. Some turns take five minutes. Turns with large detailed battles can sometimes take longer, but they don't happen all that often. Usually, you're planning strategic maneuvers, making sure your economy is producing what you need (maybe 1 minute a turn, total), and seeing if you can upgrade to better weapons.
The beauty of the game is that you can turn off some of what you don't what to deal with. I don't like the role of governors in the game so <click> they don't play a role at all. If you want the detail, add it in. If not, turn most of it off.
I guess what I'm really saying is that there's enough detail to keep the micromanagers happy, but not so much as to be a distraction at all. And, you have some control over what you have to do and what you don't have to do. Once you learn it, it moves VERY quickly.
I got creamed the first four or five games, but learned quickly how to win. The most important aspects of the game are where your units are, and how well they're supplied, and how well they're equipped. That's very realisitc for a straegic game, IMO.
The two strategic guides on this forum are invaluable. They helped me quite a bit.
Buy it. You won't be disappointed.