The VIIth army Corps, forming the pivot upon which the intended wheel to the right was to be effected, occupied the Bois de Vaux and Bois des Ognons; the 8th, under the personal command of the King, halted at Rezonville, ready to proceed to the north or east, as might be required.  The IXth Corps, on its left, advanced toward the Marcel, while the IIId and Xth formed the second line.  The Guards and XIIth Corps moved in a northerly direction.

A serious delay occurred when the XIIth Corps of the Second Army, which was stationed on the right, was commanded to form the left wing, by the crossing of the two on the march.  The Saxon troops did not get through Mars-la-Tour until nine o’clock, and till then the Guards could not follow.

The advanced guard of the XIIth Corps had meanwhile reached Jarny, and proceeded as far as Briey without encountering the enemy.

Before this could be known, the authorities at headquarters had been convinced that at least the main forces of the enemy were still at Metz; misapprehension, however, prevailed as to the extension of their lines, and it was thought the French front did not reach beyond Montigny.  The general in command of the Second Army was therefore instructed not to proceed further northward, but to join the IXth Corps in attacking the enemy’s right wing, and move in the direction of Batilly with the Guards and the XIIth Corps.  The First Army was not to attack in the front until the Second was ready to strike.

In obedience to this, Prince Frederick Charles ordered the IXth Corps to march on to Verneville, and, in case the French right wing should be found there, to open battle by bringing a large force of artillery into action.  The Guards were to continue their advance via Doncourt to reinforce the IXth as soon as possible.  The XIIth was to remain at Jarny for the present.

A little later fresh reports came in which indicated that the IXth Corps, if proceeding in the manner ordered, would come upon the French centre, instead of their right wing.  The Prince therefore determined that the Corps should postpone the attack till the Guards had done so at Amanvillers.  At the same time the XIIth Corps was pushed on to Ste.-Marie-aux-Chenes.

But, while these orders were being given, the first heavy firing was heard at Verneville.  This was at twelve o ’clock.

The two Corps on the left had, of their own accord, taken an easterly direction without waiting for orders, and the IId Corps moved up behind the IXth at the farm of Caulre.

General von Manstein, in command of the IXth, had observed from near Verneville a French encampment at Amanvillers, apparently in a state of quietude.  From that point of view the great masses of troops on their immediate left at St.-Privat were not visible.  Mistaking this camp for the right wing, he determined to act on his first orders and take the foe by surprise.  Eight of his batteries at once opened fire.