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 Chalons, 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 a 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.