Not sure any of this makes sense.
As far as revenge on the German people goes, it was after the war when the borders were redrawn for Czechoslovakia and Poland that all the Germans who lived there were forcibly sent packing to the new Germany much farther West. I've seen estimates that over 2 million civilians died on the march.
This was AFTER the war, not DURING the war.
The last I looked, that was pretty much all the Soviets' doing, with a little acquiescence by Roosevelt. It was something that practically, he couldn't have done much about, in any case.
Did you have a point?