In late April 1800, a French army under the command of Jean Victor Marie Moreau crossed the Rhine river near Basel. At Stockach and Engen on 3 May, Moreau captured Kray's base of supplies and forced him into retreat. Two days later, Kray confronted his pursuers at Battle of Messkirch but was beaten again. On the 9th, the corps of Gouvion Saint-Cyr caught up with a part of Kray's army and the two sides battled again.