Von Alvensleben, to whom the 6th cavalry division had meanwhile been assigned, seems to have received no local intelligence whatsoever; and at daybreak on the 16th he began his march in two columns, the 6th division on Mars-la-Tour, the 5th towards the Rezonville-Vionville plateau. And shortly after 9.15 A.M. he suddenly discovered the truth. The entire French army lay on his right flank, and his nearest supports were almost a day's march distant. In this crisis he made up his mind at once to attack with every available man, and to continue to attack, in the conviction that his audacity would serve to conceal his weakness. All day long, therefore, the Brandenburgers of the III. corps, supported ultimately by the X. corps and part of the IX., attacked again and again. The enemy was thrice their strength, but very differently led, and made no adequate use of his superiority (battle of Vionville-Mars-la Tour). The 17th of August. Meanwhile Prince Frederick Charles, at Pont-a-Mousson, was still confident in the French retreat to the Meuse, and had even issued orders for the 17th on that assumption. Firing had been heard since 9.15 A.M., and about noon Alvensleben's first report had reached him, but it was not till after 2 that he realized the situation. Then, mounting his horse, he covered the 15 m. to Flavigny over crowded and difficult roads within the hour, and on his arrival abundantly atoned for his strategic errors by his unconquerable determination and tactical skill. When darkness put a stop to the fighting, he considered the position. Cancelling all previous orders, he called all troops within reach to the battle-field and resigned himself to wait for them. The situation was indeed critical. The whole French army of five corps, only half of which had been engaged, lay in front of him. His own army lay scattered over an area of 30 m. by 20, and only some 20,000 fresh troops--of the IX. corps--could reach the field during the forenoon of the 17th. He did not then know that Moltke had already intervened and had ordered the VII., VIII. and II. corps[3] to his assistance. Daylight revealed the extreme exhaustion of both men and horses. The men lay around in hopeless confusion amongst the killed and wounded, each where sleep had overtaken him, and thus the extent of the actual losses, heavy enough, could not be estimated. Across the valley, bugle sounds revealed the French already alert, and presently a long line of skirmishers approached the Prussian position. But they halted just beyond rifle range, and it was soon evident that they were only intended to cover a further withdrawal. Presently came the welcome intelligence that the reinforcements were well on their way.