In the northern section of hostilities, before the end of the year, the siege of MÉziÈres was brought to an end. After the battle of Sedan the Commandant had contributed supplies from the magazines of the fortress for the maintenance of the great mass of prisoners, and it had remained, therefore, for the time exempt from attack. Later the place precluded the use of the railroad; still it was only kept under provisional observation till the 19th of December, when, after the fall of MontmÉdy, the 14th Division moved up before MÉziÈres.

The garrison numbered only 2000 men, but it was effectively assisted by bands of volunteers outside, who displayed extraordinary activity in this broken and wooded country. The place was not completely invested till the 25th.

MÉziÈres stands on a mountain-spur which is surrounded on three sides by the Moselle,[58] but it is hemmed by a ring of heights. The character of the defences, which had been strengthened by Vauban, with their numerous salient angles, was not calculated to resist modern long-range artillery. The place exposed an isolated rampart of masonry in a circumference of from 2160 to 3250 yards, and although the long delay had been utilized in repairing the weak points by throwing up earthworks, a bombardment could not fail to be destructive to the defenders.

When Verdun had surrendered, heavy siege guns were brought by rail from Clermont to a position close in front of the southern face of the fortress. The only hindrance to the erection of the batteries was the state of the soil, frozen to a depth of twenty inches; and at a quarter past eight on the morning of the 31st of December 68 siege guns and 8 field-pieces opened fire. At first the fortress replied vigorously, but by the afternoon its artillery was utterly silenced, and the white flag was hoisted next day. The garrison were taken prisoners; considerable stores and 132 guns fell into the hands of the besiegers. But the chief advantage gained was the opening of a new line of railway to Paris.