By 1100 hours, Prussian artillery took a toll on the French, while more Prussian troops arrived on the battlefield. The Prussian V and XI Corps reached their designated positions to the west and north-west of the French army by 0730 and 0900, respectively. A French cavalry unit advancing west was slaughtered by Prussian infantry and artillery fire. The Prussian artillery batteries took up positions along slopes overlooking the French army. Nonstop German artillery fire on the helpless French infantry and artillery, Prussian attacks from the northwest and east and Bavarian attacks from the southwest drove the "Army of Châlons" north into the Bois de la Garenne, where it was surrounded. Wimpffen at 1300 gave orders for a breakout to the south. The attacks failed completely or did not get going at all and Douay's 7th Corps front line was broken under the weight of German firepower. Douay's left flank had been dug in in two lines of trenches above Floing, their fire keeping the Germans pinned down in the village. By 1300, the German artillery had destroyed Douay's and the German 22nd Division turned Douay's left flank, defeating all counterattacks by French infantry and lancers. Douay directed General Jean Auguste Margueritte's cavalry squadrons to open an escape route by launching three desperate attacks on the nearby village of Floing where the Prussian XI Corps was concentrated. Margueritte was mortally wounded leading the very first charge, and the two additional charges were mowed down by German infantry fire at 1500, the number of French killed and wounded amounting to 791. By 1400, the German infantry had seized the Calvaire and opened fire on the huddled French masses in the Bois de la Garenne. The Germans then closed in for the kill from all sides. The French 7th Corps under Douay dissolved into a panic-stricken horde, seeking refuge in Sedan while pounded by German artillery. Ducrot's 1st Corps was routed by the artillery of the Saxon XII Corps and the Prussian Guards Corps. The Bois de la Garenne was subject to constant German artillery fire from multiple sides and when the Prussian Guards infantry captured the forest at 1430, the French survivors inside it surrendered "en masse". By the end of the day, with no hope of breaking out, Napoleon III called off the attacks. He ran up the white flag on the fortress walls of Sedan and sent General André Charles Victor Reille to deliver a letter of surrender to the Prussian Royal Headquarters, situated on the hillside above Frénois.