In April 1800, Laval led a brigade in Moreau's Army of the Rhine. His division commander was Dominique Vandamme and the component units were the 1st Light Infantry and the 36th, 83rd, and 94th Line Infantry Demi Brigades, and the 8th Hussars. Vandamme's division belonged to Claude Lecourbe's Right Wing. Vandamme cowed the fortress of Hohentwiel into surrendering on 1 May 1800. Two days later, the division was in action at the Battle of Stockach. On 5 May, Vandamme's troops fought at the Battle of Messkirch. Laval missed the Battle of Hohenlinden on 3 December 1800. During the fall campaign, he led a brigade in Charles-Étienne Gudin's division of Lecourbe's Right Wing. On 14 December at Salzburg, the Austrian rear guard repulsed elements of Lecourbe's wing, including Gudin's division.