Abderdeen had a couple of Tigers, including a armor cutaway King Tiger that was eventually displayed at Knox.
The largest of the WWII German Tanks at Knox when I was there [1960s] was a Panther V. I had to go to Aberdeen and talk very nicely to Col. Jarrett to learn to drive *his* Tigers.
I think all those museum tanks that used to be at Knox are now at Benning. A guy I know here in ATL was one of the architects for the new museum at Benning (for the conceptual design phase). I haven’t been down there yet to see it, this has been in the last few years. I just looked up an old discussion about it, he said they were moving the tanks in 2010.