Meanwhile the other Corps of the IInd Army were pursuing the march towards the Moselle farther to the southward; if the enemy should attack them with superior forces after they had crossed the river, it would be possible for them, in case of need, to fall back on the IIIrd Army.
So much caution was not universally deemed essential; it was argued that the French seemed already committed to full retreat, they ought not to be allowed to get away without punishment, and it followed that the German Army should strike without delay. The French had, indeed, already committed themselves to a further retreat; but when in the afternoon (of the 14th) the VIIth Corps discerned their retrograde movement, a fight began on the hither side of the Moselle, which, by the voluntary intervention of the nearest bodies of troops, developed into a battle in the course of the evening.
The Commandant of Metz had declared his inability to hold that place for a fortnight, if left to his own resources; but the chosen and intrenched position on the Nied, taken up to cover the fortress, had been found locally defective, and the French Head-quarter hoped to find a more favourable defensive position in the vicinity of Verdun.
Military necessity outweighed even a politic regard for public opinion, and the Emperor, although he had transferred the command-in-chief to Marshal Bazaine, still remained with the army, for it would have been impossible for him to return to Paris in existing circumstances.
Very early in the morning of the 14th August the multitudinous trains were being withdrawn through the city, and towards noon the IInd, IVth, and VIth Corps got in motion, while the IIIrd Corps remained in position behind the deep valley of the Colombey brook, to cover the retirement.
When, at four in the afternoon, the break-up of the enemy was perceived, General von der Goltz (commanding 26th Infantry Brigade) with the advanced guard of the VIIth Corps struck him in the act, and wrenched from him Colombey and the Château d'Aubigny on his right flank. But, at the first cannon sound, the French columns immediately turned about, fully equipped for fighting, and eager, after their many previous disasters, to break the spell by a desperate effort. Castagny's Division threw itself in greatly superior force upon the weak German detachment in the isolated position of Colombey, which held its own only by the utmost exertion.