The German left wing had no enemy before it, and could be brought into closer connection with the centre. To bring the three armies abreast of each other a wheel to the right was requisite. The advance of the Ist and IInd Armies had, however, to be delayed, as the IIIrd did not reach the Saar until August 12th. The whole movement was so arranged that the IIIrd Army was to use the roads by Saarunion and Dieuze, and to southward; the IInd those by St. Avold and Nomény and to southward; the Ist those by Saarlouis and Les Etangs, the last also taking the direction of Metz.
The cavalry Divisions which were reconnoitring far to the front, reported the enemy as retreating all along the line. They ranged close up to Metz, and across the Moselle both above and below the place, forcing the detachments of Canrobert's Corps, which had again been ordered up from Châlons, to return thither. All their information indicated that very large masses were encamped in front of Metz. From this it might equally be inferred that the enemy intended to retreat further, or, with his whole force concentrated, to strike hard at the right wing of the German Army, at the moment when the impending crossing of the Moselle should make its severance from the left wing unavoidable.
The chief Head-quarter restricted itself in ordinary course to issuing general directions, the execution of which was left in detail to the army commanders; but in this instance it was deemed necessary in the momentary circumstances to regulate the movements of each separate corps by specific orders. On August 11th the Head-quarter of his Majesty was therefore transferred to St. Avold, in the front line, and midway between the Ist and IInd Armies, so as, by being in the immediate vicinity, to be able to exercise timely authority to either hand. The three Corps of the Ist Army advanced towards the German Nied on August 12th, only to find that the French had evacuated that position. Three Corps of the IInd Army on the left of the Ist also moved forward in prolongation of the same front by Faulquemont and Morhange, while two others followed.
On the next day the IInd Army reached the Seille, without encountering the enemy, and occupied Pont à Mousson with infantry.
The strangely inactive attitude of the French made it seem quite probable that they might not make any stand in front of Metz, a probability strengthened by the reports of the German cavalry, which was scouting as far as Toul and on to the Verdun road. But there always loomed the possibility that the enemy would throw himself with 200 battalions on the Ist Army, now in his immediate front. The two Corps forming the right wing of the IInd Army were therefore ordered to halt for the present, a little to the south of Metz, ready to deliver a shattering blow on the flank of any such attack. If the enemy preferred to assail these Corps, then would devolve on the Ist Army on its part the prompt assumption of the offensive.
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.
Battle of Colombey—Nouilly.
(August 14th.)