Have you tried to go through the 3rd Party Art Mods Forum section?  If not, it can be found here:
https://www.theblitz.club/message_boards...hp?fid=263
The color of the unit on the counters should help you out.
Red = Artillery 
Yellow = Cavalry 
Green = Infantry
![[Image: 767d737a24CWB%20Unit%20Colors.jpg]](https://www.theblitz.club/uploads/users/767d737a24CWB%20Unit%20Colors.jpg) 
I can't remember if the stock version Overland uses Blue/Grey colored 2D counters or it uses the Blue/Butternut color.  I like to use Blue/Butternut so I am not sure if I have altered my stock files or not.
In some 3rd party mods, you may see Blue used to represent Infantry instead of Green.