"Army of Northern Virginia, Army of the James, Army of the Potomac, Army of Tennessee, etc. There was a lot of regional divide back in those days.... "
These individual regional armies that made up the forces of the CSA or the USA as part of their organization of command structure don't figure into the general discussion that Allan Pitts raised.. that was specifically whether the best collective term for the overall forces, or soldiers, of the USA during 1861-65 should be called "Federal" or "Union". Alan stated he has a dislike for the term Union, and will only use Federal.
Under that specific discussion the soldiers Army of the Tennessee could be called Union soldiers or Federal soldiers or Yankee or Northern or whatever one chooses .. the specific regional command or army corps they served within are not any part of the matter under discussion... so Army of the Tennesse or any of the others you mention are completely irrelevent... they were either CSA forces of USa forces.. the CSA forces are generically called "Confederate", with that understood, Alan asked what is the best generic term for the forces of the USA, and it is that question, and that one only I tried to answer.
Alan asked whether Federal or Union was the best overall choice. I gave my answer in shorter versions elsewhere and since Alan wished to continue the discussion here I combined my smaller previous individual answers into one more complete explanation of my reasoning to bring everyone up to speed on the earlier discussion that had already taken place elsewhere.
Simple as that. It had all been hashed out earlier and Alan asked that it be brought over here. I did so at his request, and thought it only polite to repeat it all so interested folks didn't have to sort through seevral postings elsewhere to get the full gist of the fuller exchange. Sorry you didn't appreciate my taking the time tobother to bring my thoughts on this topic over here.
Alan thought the folks in this forum might want to see his side and mine and offer their own thoughts. He gave his. I now have posted mine.
And yes, I did breathe, and quite well, thank you. Perhaps you have found that sarcasm works for you here, but it doesn't really make your argument stronger in my eyes. It is a good reason, however, why many potential contributors avoid such forums as this, and don't bother posting their views or thoughts for discussion. Sarcasm makes it a waste of time.