With Desaix on the left and Saint-Cyr on the right, Moreau pressed north up the east bank of the Rhine to the Murg River. The French thrust severed Austrians under Fröhlich and French Royalists under Louis Joseph, Prince of Condé from the remainder of Latour's army. Ferino's wing pursued Fröhlich and Condé to the southeast and seized the region around Freiburg im Breisgau. On the Murg, Desaix won a minor victory over Latour in the Battle of Rastatt. By this time, Archduke Charles arrived from the north with 20,000 reinforcements. The archduke planned to attack on 10 July, but Moreau preempted him by one day. In the Battle of Ettlingen on the 9th, both commanders tried to hold with their left wings and attack with their right. On Moreau's right, Saint-Cyr was successful in driving back Konrad Valentin von Kaim's Austrians near Frauenalb while Taponier's division pushed back Lindt's Saxons near Neuenbürg. On the French left, Desaix captured Malsch twice but was ultimately driven out. Despite having won the battle on his right flank, Charles feared Saint-Cyr's advance might cut him off from his supply base at Heilbronn so the archduke ordered a retreat to the east.