So, I experienced UG:G on my iPad, bought it on the Mac App Store. Loved it. Lurked on this forum and on the Steam forum.
Knew about UG:CW and got it for my Mac in July 2017 as far as I can tell from Steam profile info. Might have even been playing it on Steam running on wine, initially. Can't remember.
Started a BG Union play through but just didn't have the time to commit as life did its thing. Then had to migrate to a new computer. Lost my saves.
Recently I've had some spare time, so I started again on Colonel level as Union with UI & AI 1.6 mod. (Re)Learning the ropes.
Last night I fought Fredericksburg for the first time. O ... M ... F ... G!!!!! I got hammered, but I won. I only managed a kill:death ratio of 2:1 against the CSA. I was a little incautious, shall we say? But the scale of the thing was incredible!!! I could replay for a better result, but I'm not going to. On Colonel level I have plenty money and etc. I'll pay the price with cash. But it was an incredible experience. Can't wait to experience the rest of the game. I'll be going straight back in after I've finished this post.
I'm a previous user of Darth Mods in RTW and M2TW. This game (and UG:G) are everything I could have hoped for from such a pedigree.
Thank you Nick, and all at game labs for creating this and also pandakraut for the UI & AI mod.
[EDIT] I forgot to add that this beats TW for battle AI by a long shot IMVHO [/EDIT]