 Complete the following phrase:  After the Battle of Jena, Bernadotte crushed the Prussian Reserve Army, all fresh troops fortified behind a marsh and the River Saale, under Duke Eugen of Württemberg at Halle 17 October 1806, though Imperial Headquarters did not much appreciate this victory. When visiting Halle after the battle, and commenting on the degree of difficulty of storming a fortified position accessible only by a single bridge, Napoleon enigmatically commented Bernadotte stops at nothing. Someday the Gascon will get caught. Subsequently, Bernadotte pursued, conjointly with Soult and Murat known as the Pursuit of the Three Marshals, Prussian general Blüchers Corps to 