Hello and good luck with your game, it certainly looks very nice.
To echo Queeg's concerns above about infantry speed - you're really going to need to slow down the infantry, unless what you're showing us so far is not portrayed in real time.
As an example, my estimate of distance between McPhersons Ridge and Oak ridge (where you have a short vid of Rebels charging towards a union line) is about 1 km (measured in google earth). It seems to me the Rebels are going to cover off this ground in less than perhaps 30 seconds (and charging in such an unorderley fashion, tsk tsk :-)
Also, it was not common for a charge to take place over that kind of distance. Walking pace, speeding up to 'on the double' and then perhaps the last 50 meters would be an all out hell for leather charge. But during those times a charge to contact was extremely rare, most charges were broken well before contact due to punishing defending fire.
Just some feedback based on the pics shown so far.
cheers Chris