Leaving behind François Séverin Marceau-Desgraviers with 28,000 troops to blockade Mainz and Ehrenbreitstein, Jourdan pressed up the river Main. Following Carnot's strategy, the French commander continually operated against Wartensleben's north flank, causing the Austrian general to fall back. Jourdan's army numbered 46,197 men while Wartensleben counted 36,284 troops; Wartensleben felt no security in attacking the larger French force, and continued to withdraw to the northeast, further away from Charles' flank. Buoyed up by their forward movement and by the capture of Austrian supplies, the French captured Würzburg on 4 August. Three days later, the Army of Sambre and Meuse, under the temporary direction of Kléber, won another clash with Wartensleben at Forchheim on 7 August.