The losses of the army had hitherto been made good from the reserves, but the transport of the prisoners from Sedan alone required the services of fourteen battalions of the force blockading Metz. Thus it had not yet been possible to provide sufficient shelter for the troops near the wide extension of the entrenched line. Raw, rainy weather had come on early in the season, and a fourth part of the men were still roofless; so that by degrees the sick in hospital reached the alarming number of 40,000.
Although fifty heavy guns had been brought up from Germany, they were useless for the bombardment of Metz, since in consequence of the superior calibre of the fortress artillery they could only be fired at night, and with frequent change of position. There was nothing for it but to hope for the best, and have patience.
For four weeks already had the besieged been consuming their stores. To replenish those in some degree, and at the same time to revive the spirit of the troops by active measures, the Marshal decided on fetching in all the provisions to be found in the villages inside the line of the German investment, under cover of a sortie.
At noon on September 22nd Fort St. Julien opened a heavy fire on the outposts of the Ist Corps. Strong bodies of infantry then advanced on the villages to the eastward, drove in the picquets of the enemy, and returned to Metz with the stores which had been seized. But a similar attempt made next afternoon on the villages to the north was less successful. Most of the waggons had to return empty, under the fire of the Prussian batteries quickly brought up into position. Finally, on the 27th, a sortie for the same purpose was made to the southward, which led to a series of small conflicts and the capture in Peltre of a German company, which was surrounded by a much stronger force. A simultaneous sally on the left bank of the Moselle was baffled by the fire of the alert artillery of the besieging force.
Thionville, on the north of Metz, had hitherto only been kept under observation by a small force, which could not hinder the garrison from scouring the country as far as the neighbouring frontier, taking many prisoners, seizing fifty waggon-loads of supplies, and even diverting into the fortress a whole train of provision-trucks while passing by the now restored railway from Luxemburg.