While Charles was inflicting damage at Wetzlar and Uckerath, on 15 June, Desaix's 30,000-man command mauled Franz Petrasch's 11,000 Austrians at Maudach. The French lost 600 casualties while the Austrians suffered three times as many. After feinting at the Austrian positions near Mannheim, Moreau sent his army south from Speyer on a forced march to Strasburg; Desaix, leading the advanced guard, crossed the Rhine at Kehl near Strasburg on the night of 23/24 June.