The first thing to remember is that Nov. 11th is a holiday in France and you may find car rental agencies closed. Friday, Nov. 10th is going to be extremely busy because of the holiday--many people will take it off. Be sure to check availability office hours for both dates. Technically you need a translation of your US drivers licence if the police stop you, but I've never been asked for it while driving in France.
Second, assuming you land at Charles de Gaulle airport on Nov. 10th and want to go immediately to the D-Day beaches in Normandy, you have to consider jet lag, traffic jams getting out of Paris, and driving in France. If you haven't done any driving in France before, I would not recommend picking up your car at the airport. I'd take the RER to Gare St. Lazare and then a train to Caen. Be aware that the trains may be jammed thanks to the Nov. 11th holiday. There are car rental agencies right across the street from the Caen train station. Then I'd drive to Bayeux and spend three nights there to give yourself two full days for the D-Day sights.
The easiest way to get to Bastogne is to drive there--six hours minimum. The new museum on the Battle of the Bulge is excellent. You might also consider hiring a local guide to take you on a tour of battle sites, such as the foxholes for Easy Company from "Band of Brothers" (they're still there). I stayed at the Hotel Wagon Leo right in the center of town--it was a great location and had an excellent restaurant. You should plan on at least two nights in Bastogne.
If you return your rental car to an office in France, you will avoid the extra fees, so I would drive back to a Paris airport and fly to Turin from there. Good luck with your trip.