The IInd Army, its southern (left) flank covered by the IIIrd Army, had been moving to the westward, while the Corps it still lacked were being brought up by railway. Its leading Corps, having traversed unmolested the long defiles of the forest-belt of Kaiserslautern, reached on the 5th the line Neunkirchen-Zweibruecken. The cavalry, scouting into French territory, reported that the enemy was retreating. Everything seemed to indicate that the French would await the attack of the Germans in a strong defensive position. The nearest position of the kind that offered was that on the farther bank of the Moselle, of which Metz protected one flank, Thionville the other. It was decided that if the French were found in that position, the Ist Army should hold the enemy in front, while the IInd made a circuit south of Metz, and so the enemy be forced either to retire or to fight. In case of disaster the IInd Army was to fall back on the IIIrd, now advancing over the Vosges. The protrusion to the south-westward[3] of the Ist Army towards the Saar, which had not been intended by the supreme Command, had brought its left wing in upon the line of march laid down for the IInd, and detachments of the two armies had to cross each other at Saarbruecken on the 6th. Thus there was indeed no lack of strength at that point; but as a battle on that day was neither expected nor probable, the synchronous arrival of troops had not been pre-arranged, and so detachments could only come up by quite unprescribed routes and arrive one after the other at different hours. The 14th Division of the VIIth Corps was the first to reach Saarbruecken, towards noon on the 6th. General Frossard, considering his position there very hazardous, had left the night before, without waiting for permission, and had fallen back with the IInd Corps on Spicheren, where it had entrenched itself. The IIIrd, IVth, and Vth Corps were behind, at distances of from nine to nineteen miles, and the Imperial Guard was about twenty-three miles rearward. The Emperor, therefore, had it in his power to collect five Corps for a battle in the vicinity of Cocheren, or, on the other hand, to support Frossard with at least four Divisions, if that General were confident that his position was strong enough to hold.