Excellent books, I have them both.
Well, First Clash is excellent, Counterstroke is less than ideal.
The first one is based on what was really there. I actually have it in paperback, ISBN and all that. I don't have it in front of me, but I recall the back saying "Tom Clancy and others have told you the fiction of what WWIII would be like. Now read the reality". Sums it up, IMHO. As for the location, I guess putting them on the Buehl plateau near Baden made sense for TEWTs, vice going trepsing across Bavaria.
Counterstroke: Bobcat recce vehicles, Lion Tanks, Chimera Tank Destroyers, etc. Also, though the brigade is filled with 29 PPCLI (or whatever), it "claims" to be the same brigade (4 CMBG) from First Clash, instead of putting them forward as a different brigade group. Personally, I think it would have been just as effective on its own, instead of talking of the value of the Chimera's used "to great value" on the Buehl Plateau.
My $0.02 worth, and remember, you get what you paid for ;-)