Hello there,
You may wish to check with the historical branch of the US Army, Center for Military History (
http://www.army.mil/cmh-pg/). The United States National Archives may have a lot of good information as well and they are generally extremely friendly and helpful for researchers.
Some of the possible info you can use during your research:
1. The 101st Infantry Regiment was in Kronach in Upper Franconia (Oberfranken).
2. 255th Infantry Regiment moved through Waldenburg, Baden-Württemberg, but I'm not sure if this is in Franconia.
3. 55th Armored Infantry Battalion and US 22nd Tank Battalion were in Wernberg, but again I'm not sure if this town was in Franconia.
I hope that helps a little...