Don't forget the Angorian troops in the area either! Africa has come to help France in its moment of need!
Most of Republican SPain's forces are amassed in Saarbruken, Maginot, and Valenciennes. The Maginot has been extended up to the English Channel, though it's not quite as fortified as the Alscaise-Lorraine region.
The Stuttgart attack was surprising. It was a multifront battle, but we had the advantage of defending in Winter. Though all of our provinces now require the Germans to cross a river, which can incur some pretty heavy penalties upon an attack. I'm not worried about that region...but the Belgiums...that's a bit nerve wracking.