I couldn't speculate on the possible transfer you mention. I'll admit that I am confused. Did he start in the 90th ID for sure?
His experience with the former German POW was interesting, and soul touching.
Many years after the war, I met a former Italian POW atop the cathedral in Milan. He was captured in Africa, then interned at Big Spring, TX, for the duration. He couldn't say enough about his experience..all favorable.
Let me know if I may be of further service to you.
Finally, you are more than welcome. I get as much pleasure out of this activity as the recipients. Perhaps more !