Cut the crap, let's get straight to the point:
- easy to learn, not that hard to master to on two first levels of "easiness". (militia and regular)
- nice ui
- nice movement system. You just draw a line mith a mouse and units follow it
- fast battles (win or lose in 5-10 mins for each battle). It can also be a cons.
- civil var flavour with historical units
- terrain bonuses
- some small things like adjutants who carry general's orders (they may become lost/intercepted and the orders get lost with them), hidden personalities of unit commanders - cautious may ignore some of your orders, agressive may charge needlessly into action, etc.
- basic logistics (artillery runs of ammo and must be resupplied by a wagon train)
- decent AI.
- absolutely no graphics to speak of. Units are represented by rectangles composed of little squares. If such squares are in disarray you unit ir broken/routed/not in good order. See screens above and that's the battle in its entirety. Environment consists of a few copipasted houses/trees
- battle can run on one speed only or be paused. Maybe you can change it but I didn't find out how
- no tactical formations. Column or two rows. Fullstop
- engagements between units are affected by terrain, morale (milita, regular, vets), number of men and flanking mostly. Units have other stats. like fatigue but since battles are so short it's usually on maximum. Weather/wind direction are also there but mostly irrelevant. Night affects visibility for engaging, however, and you can see campfires where units are postioned (including enemy units)
- dumb building ui. Bridges/covers are hard to place and cannot be cancelled. I once lost a battle because I misclicked, all nearby units started building something and noone was left in control of my victory points
- about 20 battles for each campaign (I found it really short at the pace the game was running)
- units have no independent thinking beyond personalities of their cammanders. If a neighbour is attacked a few meters away most prefer to stay where they are and enjoy the show.
- some simple but annoying bugs. The ones I encountered during almost 6 hours:
units get stuck. Usually in rivers. I had to fight without artillery entirely because my wagon train got stuck
units have trouble crossing bridges. Some can cross only after second/third attempt.
if you want to get some regular/vet achivements (regular Bull Run, etc.) set to zero your campaign of a previous difficulty level. I.e. I beat the Confederate campaign on regular + vet. for some battles, but because I also had Confederate militia campaign started earlier I got only militia achievements.
Verdict: worth playing if costs less than 3 $ and you really like US civil war. Want something more complicated and/or with graphics try Civil war Mod for Medieval TW.