Major Koerber had advanced with four batteries close up to Vionville under cover of the cavalry, and the French troopers, surprised by their fire, fled in utter confusion through the camp of the infantry. The latter, however, briskly got under arms in good order, and the artillery opened a heavy fire. Destitute at first of infantry supports, the Prussian guns were withdrawn. Matters soon became serious. General von Alvensleben, fearing lest he should fail to overtake the enemy, had started again with the IIIrd Corps after a short night's rest. The 6th Division marched on the left, by Onville; the 5th, on the right, followed the long forest valley on the way to Gorze. This valley so capable of defence was found unoccupied by the enemy, who indeed had taken very few precautions. The advanced-guard presently encountered Berges' French Division on the open plateau south of Flavigny, and General von Stuelpnagel (commanding 5th Infantry Division) soon discovered that he had before him an enemy whom it would take all his strength to beat. At ten o'clock he began operations by sending forward the 10th Brigade (commanded by General von Schwerin); and opened fire with twenty-four guns. Both sides now assumed the offensive. The Prussians, on the right, fought their way with varying fortunes through the wood, often in hand-to-hand encounter, and, towards eleven o'clock, succeeded in reaching the spur of the wood of St. Arnould projecting in the direction of Flavigny. Their left wing, on the contrary, was repulsed; even the artillery was in danger; but the 52nd Regiment hurried forward and re-established the fight at the cost of bloody sacrifices. Its 1st Battalion lost every one of its officers, the colours passed from hand to hand as its bearers were successively shot down, and the commander of the 9th Brigade, General von Doering, fell mortally wounded. General von Stuelpnagel rode up into the foremost line of fire, inspiriting the men with brave words, while General von Schwerin collected the remnants of troops bereft of their leaders, and, reinforced by a detachment of the Xth Corps from Noveant, carried the height in front of Flavigny, whence the French presently retired.