In the Arrondissements the National Guards were formed into companies and battalions; then in each Department these were consolidated into brigades; and finally the brigades were incorporated along with the nearest troops of the line and Gardes-Mobiles into the larger Army-Corps.
Thus, in the course of October, under cover of the troops of General d'Aurelle de Paladines which had re-crossed the Loire, a new XVIIth Corps was made up at Blois, another, the XVIIIth, at Gien, and a third, under Admiral Jaurès, at Nogent le Rotrou. A large force was in Picardy under General Bourbaki, another at Rouen under Briand, and a third on the left bank of the Seine under Fiéreck.
The detachments of the army investing Paris, which were pushed forward to the south, west, and north, already met in all directions strong forces of the enemy, which they indeed repulsed in many small encounters, but could not follow up to the places of their origin. For such purposes the arrival of the army released from the siege of Metz was needed, and this was not to be looked for before some time in November, while now in October there was threatened a general advance of the French forces on Paris.
Having regard to the inferior strength of General von Tann's Division holding Orleans, at a French council of war held at Tours it was decided to recover that important place. The attack was to be delivered chiefly from the west. The French XVth Corps--two Infantry Divisions and one of Cavalry--therefore assembled at Mer on the northern bank of the Lower Loire, and the main body of the XVIth behind the forest of Marchénoir. The remaining portions of both Corps were to co-operate on the Upper Loire by way of Gien. Any further advance was not projected, at any rate for the present; on the contrary, General d'Aurelle's instructions were to form an intrenched camp about Orleans for 200,000 men.
General von Tann's reconnoitring parties to the westward everywhere met hostile detachments, which were indeed driven back by restraining skirmishes into the forest of Marchénoir without much difficulty, but which betrayed the vicinity of large forces of the enemy. On the whole an attack from the south-west on the investing army before Paris seemed the likeliest event, since this would threaten both the German Head-quarter in Versailles and the siege-park at Villacoublay; while the German reinforcements from the eastward would have the furthest distance to reach the quarter indicated.