It was while thus busily engaged, transporting our stores, and putting things in their place ready for use, that I saw the Emperor Napoléon slowly pacing up and down in front of the Sous-Préfecture, cigar in mouth, with his hands behind his back and head bent, gazing vacantly at the ground.

All that morning we had heard the distant booming of cannon, in the southward direction of Carignan and Mouzon. As the day advanced the cannonading came nearer, and grew more distinct, until it seemed to be in the immediate neighbourhood of the town. At nightfall the firing ceased, and we could perceive the glare of a distant village, in the direction of Douzy, lighting up the darkness.

A brief sketch of the defences of Sedan, as well as an explanation of the position in which our hospital stood with regard to the fortifications, will not be out of place. The river Meuse, on the right bank of which Sedan is situated, communicates by sluice-gates with two deep trenches about thirty feet wide, separated from one another by a high embankment. On opening these gates, the trenches and a vast expanse of meadow land, extending nearly to Bazeilles and along the river beyond it, had been flooded, and the city was thus defended by a double wet ditch for about three-fourths of its circumference. All this lay external to the stone-faced ramparts, upon which stood heavy siege-guns, ostensibly to protect the town. They were, in fact, obsolete dummies. Outside these, again, were high earthworks, faced by strong palisades of spiked timber. At the summit of the north-east corner of the fortifications, towering above the plateau of Floing, rose the Citadel,—a huge, dark mass of mason-work and grassy slopes, which seemed to frown over a series of steep cliffs upon the town beneath. Above this stood our hospital of the Caserne D'Asfeld, called after a French Marshal of Louis XIV.'s time. The Prussians afterwards knew it as the "Kronwerk D'Asfeld". It was a fortress which had a drawbridge and defences of its own. From these details we may judge what a stronghold Sedan would prove, were it not for the range of hills opposite, called the Heights of Marfée. But these command the town; and the Prussians had been permitted to occupy them.

Now, as to the Caserne itself. Standing on the highest point of the fortifications, about 100 feet above the Meuse, it might have seemed the very position for a hospital. It was a two-storied bomb-proof building, with a flat roof, 240 feet long, and contained nine large wards, fifty-three feet by seventeen, and ten feet high, as well as four small ones with twenty beds in each. There were two spacious windows in every ward. The floors were concrete. On the fortifications outside were rows of magnificent trees, which gave the grounds a picturesque appearance. But in front, facing the town, there were no trees; and from this point we had an unbroken view of Sedan and the valley of the Meuse, with the hills opposite. The villages of Donchery, Frénois, and Wadelincourt were all visible.

Six cannon commanded the outer breastworks, behind the buildings, and two sallyports led out beneath the fortifications, on to the plains of Floing. We heard from the wounded, as well as from other sources, that the French were retreating on Sedan, and that the Prussians held the left bank of the Meuse, and the valley and hills about it. The French, on their side, occupied the Illy heights to the north of the town above the plateau of Floing, the Bois de Garenne, and the east and south-east plains, from Daigny and the valley of Givonne to Bazeilles. Hence, it was evident, even at so early a date, that the French army had only the strip of small country to the north and east of Sedan, between the right bank of the Meuse and the Ardennes, by which to make good their retreat on Mézières. And of this narrow space, the defile of St. Albert alone was available for the passage of large bodies of soldiers.

The Prussian outposts were already in Vendresse and Donchery. Could they succeed in moving further north before the French started, they might cut off the retreat of the whole army.

The movements of the French in these straits had been extremely perplexing to us. They must have known their situation, if not on the 29th, certainly on the 30th and 31st. Why, then, did they not keep to the left bank of the Meuse, and seize the only available strong position visible on that side—the Heights of Marfée, which they could have held, and the possession of which would have covered their retreat along the defile of St. Albert? Instead of doing so, they chose to fall back on Sedan; a trap out of which no sane man, military or civilian, could, under the circumstances, expect an army to free itself. These positions were occupied by the Prussians at the earliest possible moment. But even if the French could not have come up by the left bank of the Meuse, they might, as late as the night of the 31st, have retreated by Moncelle, the plain of Floing, and the right bank of the river. Thus, at all events, they would have got clear of the enemy's heavy guns, which assailed them from the hills in front; and would have had some chance of meeting their foes on more equal terms. But they went to their destruction like men in a dream.

Late that evening, several large batches of wounded came into the Caserne. These kept us employed till after midnight, when we slipped out and ascended the fortifications, that we might look once more at the still blazing village, the name of which we had not then heard. Of course it was Douzy. And now we perceived, by the innumerable camp-fires gleaming around us on all sides, that we were close to the ill-fated army, of which Marshal MacMahon held the command. To-morrow it would cease to exist, and with it the Napoleonic Empire would come to an end.