Still, though the fighting had been indecisive, the conviction of victory remained with the Germans, and the idea of a French retreat became an obsession. To this idea Moltke gave expression in his orders issued early on the 15th, in which he laid down that the "fruits of the victory" of the previous evening could only be reaped by a vigorous pursuit towards the passages of the Meuse, where it was hoped the French might yet be overtaken. This order, however, did not allow for the hopeless inability of the French staff to regulate the movement of congested masses of men, horses and vehicles, such as were now accumulated in the streets and environs of Metz. Whilst Bazaine had come to no definite decision whether to stand and fight or continue to retreat, and was merely drifting under the impressions of the moment, the Prussian leaders, in particular Prince Frederick Charles, saw in imagination the French columns in rapid orderly movement towards the west, and calculated that at best they could not be overtaken short of Verdun. In this order of ideas the whole of the II. army, followed on its right rear by two-thirds of the I. army (the I. corps being detached to observe the eastern side of the fortress), were pushed on towards the Moselle, the cavalry far in advance towards the Meuse, whilst only the 5th cavalry division was ordered to scout towards the Metz-Verdun road, and even that was disseminated over far too wide an area. Later in the day (15th) Frederick Charles sent orders to the III. corps, which was on the right flank of his long line of columns and approaching the Moselle at Corny and Noveant, to march via Gorze to Mars-la-Tour on the Metz-Verdun road; to the X. corps, strung out along the road from Thiaucourt to Pont-a-Mousson, to move to Jarny; and for the remainder to push on westward to seize the Meuse crossings. No definite information as to the French army reached him in time to modify these instructions. Meanwhile the 5th (Rheinbaben's) cavalry division, at about 3 P.M. in the afternoon, had come into contact with the French cavalry in the vicinity of Mars-la-Tour, and gleaned intelligence enough to show that no French infantry had as yet reached Rezonville. The commander of the X. corps at Thiaucourt, informed of this, became anxious for the security of his flank during the next day's march and decided to push out a strong flanking detachment under von Caprivi, to support von Rheinbaben and maintain touch with the III. corps marching on his right rear. Battle of Vionville-Mars-la-Tour.