The Guard, IVth, and XIIth Corps and the 5th and 6th Cavalry Divisions were formed into a separate army under the command of the Crown Prince of Saxony; it was styled "The Army of the Meuse" and was 138,000 strong.[17] This and the IIIrd Army, which numbered 223,000 men, were directed to advance against the new French army forming at Chalons. Certainly the army investing Metz was left weaker than the blockaded enemy. It was to be expected that the latter would renew his efforts to break out to the westward. Prince Frederick Charles' main forces were therefore to remain on the left bank of the Moselle. All these orders received the approval of the King, and were dispatched to the commanding officers by eleven o'clock on the morning of the 19th. In accordance with the orders of Prince Frederick Charles, the Xth Corps occupied the woodland districts of the lower Moselle as far as St. Privat, while the IInd held the high ridge from that point to Moscou. To the right of the IInd, the VIIIth and VIIth Corps followed on, the latter positioned on both sides of the Upper Moselle. The Ist Corps occupied the Pouilly upland to left and right of the Seille, specially charged to protect the great magazines which were being established at Remilly and Pont a Mousson. The 3rd Reserve Division moved to the vicinity of Retonfay, north-east of Metz. The IXth and IIIrd Corps cantoned at St. Marie and Verneville as reserve. All the troops immediately set about the construction of earthworks, and of bridges over the Moselle above and below the fortress. Of the Corps now belonging to the Army of the Meuse, the XIIth assembled at Conflans and the Guards at Mars la Tour; the IVth Corps, which had not been ordered to Metz, had already reached Commercy. The IIIrd Army, after crossing the Vosges range, and having left a Bavarian brigade blockading Toul, was pressing forward in three columns. Its foremost Corps had already reached the Meuse, but were obliged to halt there for two days, so as to cross the river approximately abreast of the Meuse army. Its cavalry meanwhile patrolled three marches ahead as far as Chalons and Vitry, where, for the first time since Woerth, it regained touch of the enemy. The French encountered were only guarding posts on the Marne railway-line, which retired when the traffic thereon ceased. FOOTNOTE: [17] These figures are erroneous. It is manifest that three Corps and two Cavalry Divisions, most of which had been materially weakened by casualties, could not furnish a strength of 138,000 men; nor could the IIIrd Army, originally 130,000 strong, swelled by one Corps and diminished by battle losses of 12,000, approximate a strength of 223,000. As a matter of fact, on August 22nd, the Meuse Army was 86,275 strong, and the IIIrd Army 137,622; the two armies together had a total strength, in round numbers, of 224,000 men. THE ARMY OF CHALONS.