With the French Third and Fourth Armies now attacking into the Ardennes, and the infantry outpacing their horsedrawn artillery, von Bülow's German Second Army attacked Lanrezac and forced bridgeheads across the Meuse. The Fifth Army was also now attacked on its right by Max von Hausen's German Third Army; although these attacks were held, Lanrezac asked Joffre for permission to retreat. On 23 August the Fifth Army was attacked again.