It is, primarily a tank training ground. We ‘inherited’ it from the Germans after WWII who used it for similar purposes.
A good place to train maneuver units, though the weather is usually crap (like Hoenfels)...wet and COLD!
I never got to see tanks in training there. It was still being rebuilt when I left. I spent 2 years on that project. I never did a winter there. I was based out of Baumholder.