Prince Frederick Charles had hastened to the field of battle. The day was nearly at an end, darkness approaching, and the battle won. The Prussians in the evening stood on the ground which in the morning had been occupied by the French. Though General von Alvensleben had in the first instance been under the impression that he would have only the French rear-guard to deal with, he did not hesitate for a moment to become the assailant when he found the entire French Army before him. With his single Corps he maintained the fight till the afternoon, and drove back the enemy from Flavigny to Rezonville, a distance of more than two miles. This was one of the most brilliant achievements of all the war.
Thanks to the valuable assistance of the Xth Corps it was possible to carry on the battle through the afternoon on the defensive, but only by most resolute counter-attacks by the cavalry, and by the unflinching tenacity of the artillery.
It was clearly most unadvisable to challenge by renewed attacks an enemy who still outnumbered the Germans; which action, since no further reinforcements could be hoped for, could not but jeopardize the success so dearly bought. The troops were exhausted, most of their ammunition was spent, the horses had been under the saddle for fifteen hours without fodder; some of the batteries could only move at a walk, and the nearest Army Corps on the left bank of the Moselle, the XIIth,[10] was distant more than a day's march.
Notwithstanding all these considerations, an order from Prince Frederick Charles's Head-quarter issued at seven o'clock, commanded a renewed and general attack on the enemy's positions. The Xth Corps was quite incapable of answering this demand; and only part of the artillery went forward on the right followed by some infantry. The batteries indeed reached the much-disputed plateau south of Rezonville, but only to be exposed on two sides to the fire of infantry and artillery. Fifty-four guns of the French Guard alone, in position on the farther side of the valley, were taking them in flank. The Prussian batteries were compelled to retreat to their previous position, but two brigades of the 6th Cavalry Division still pressed forward. Scarcely able to discern in the increasing darkness where lay their proper line of attack, they came under very sharp infantry fire, and withdrew with great loss.
Fighting did not entirely cease until ten o'clock. On either side 16,000 men had fallen. On either side pursuit was out of the question. The Germans reaped the fruits of this victory solely in its results. The troops, worn out by a twelve hours' struggle, bivouacked on the victorious but bloody field, immediately opposite the French position.
Those Corps of the IInd Army which had not taken part in the battle, were on that day on march towards the Meuse. The advanced guard of the IVth Corps on the left wing was heading towards Toul. This fortress, commanding a railway-line of importance to the further progress of the German Army, was reported to be but feebly held, and it was resolved to attempt its capture by a coup de main. But the bombardment of it by field-artillery proved quite ineffective. Bastions of masonry and wide wet ditches made a storm impossible. An attempt to batter down the gates by shot and thus gain an entrance proved a failure. Finally the undertaking was given up, and not without some loss on the part of the Germans.
At the Royal Head-quarter in Pont à Mousson it had become known by about noon on the 16th that the IIIrd Corps was engaged in serious conflict, and that the Xth and IXth were hastening up to its support. The far-reaching consequences of this information were recognized at once.
The French were arrested in their withdrawal from Metz, but it was to be presumed as a certainty that they would again make strenuous efforts to force open their interrupted line of retreat. The XIIth Corps was therefore ordered to set out for Mars la Tour as early as three o'clock next morning; the VIIth and VIIIth Corps to stand in readiness at Corny and Arry. The bridging operations were to be pushed with the utmost vigour during the night. The Head-quarter of the IInd Army sent from Gorze the order to the Guard Corps to make a forced march to Mars la Tour, and there take up a position on the left of the XIIth Corps. The execution of these orders was facilitated by the foresight of the Commanders, who had in the course of the day received news of the battle which was being fought. Prince George of Saxony at once placed his Division on the march to Thiaucourt, and the Prince of Würtemberg assembled the Infantry of the Guard in its cantonments farther northward in readiness for an early march.
August 17th.—On this morning, at sunrise, the French outposts were observed still occupying the sweep of front from Bruville to Rezonville. Behind them were noticed a stir and much noise of signalling, which might be the indications equally of an attack or of a retirement.
The King arrived from Pont à Mousson at Flavigny as early as six o'clock. The reports sent in to headquarters until noon by the reconnoitring cavalry were somewhat contradictory; they left it uncertain whether the French were concentrating towards Metz, or were pursuing their retreat by the two still open roads through Etain and Briey. Preparations for the offensive were nowhere observed. By one o'clock, after a skirmish on the way, the head of the VIIth Corps had reached the northern skirt of the Bois des Ognons, over against which the French subsequently abandoned Gravelotte. The VIIIth Corps stood ready at Gorze, the IXth, IIIrd, and Xth remained in their positions, the XIIth and the Guard Corps were on the march. Seven Corps and three Cavalry Divisions could be counted on for the following day; for to-day all attacks were forbidden.