Archduke Charles saw that if he could unite with Wartenbsleben, he could pick off the French armies in succession. Having sufficient reinforcements and having transferred his supply line from Vienna to Bohemia, he moved north to unite with Wartensleben. With 25,000 of his best troops, Charles crossed to the north bank of the Danube at Regensburg. On 22 August 1796, Charles and Friedrich Joseph, Count of Nauendorf, encountered Bernadotte's division at Neumarkt. The outnumbered French were driven north west through Altdorf bei Nürnberg to the Pegnitz River. Leaving Friedrich Freiherr von Hotze with a division to pursue Bernadotte, the Archduke thrust north at Jourdan's right flank. The French fell back to Amberg as Charles and Wartensleben's forces converged on the Army of Sambre and Meuse. On 20 August, Moreau sent Jourdan a message vowing to closely follow Charles, which he did not do. In the Battle of Amberg on 24 August, Charles defeated the French and destroyed two battalions of their rear guard. The Austrians lost 400 killed and wounded out of 40,000 troops. Of a total of 34,000 soldiers, the French suffered greater losses of 1,200 killed and wounded plus 800 men and two colors captured. Jourdan retreated first to Sulzbach and then behind the Regnitz river where Bernadotte joined him on 28 August. Hotze and his Habsburg troops reoccupied Nürnberg and Jourdan, who had expected Moreau to keep Charles occupied in the south, found himself outnumbered.