Recovering from their first surprise, the Franks, protected to some extent by the barricades, were keeping their ground against the attack. A hand-to-hand conflict was commenced, but the Burgundians, as the more numerous, were beginning to outflank the enemy's line, when the Frank cavalry came up, and in their turn fell upon the two wings of the attack. The Burgundians were compelled to give ground, and were obliged to avail themselves of the barricades of branches and brushwood not to be outflanked. Their position, however, was becoming untenable, when Clodoald came up on the enemy's left flank. The Franks were panic-struck, for the troop conducted by Clodoald was marching in good order after the Roman fashion, in echelons, so as not to allow the cavalry to outflank their right wing. The left of the Franks took to flight, and their example was followed in turn by every part of the line. The Burgundians dashed forward in pursuit of them, but Clodoald, advancing to the front, brought his whole force to a stand, though not without difficulty.
The fugitives, on the other hand, found themselves confronted with the main body of Childebert's army. Full of wrath, and upbraiding them with their cowardice, he compelled them to go back; and a body of ten thousand men soon presented themselves in sight of the Burgundians through the woods. The order for retreat was given; and they returned in good order, not re-entering by the outpost, but marching along the east front, under the protection of the ramparts. Childebert's irritation was such that he immediately sent a thousand men to seize upon the outpost, thinking it would be feebly guarded, since the defenders were outside the city; but the attack had been foreseen, and the Franks lost a hundred men in this fruitless attempt.
On the southern side, the sortie of the Burgundians had been more decisively successful. The state of affairs was such as Clodoald had foreseen. The Franks, expecting the enemy to cross the river so as to outflank them on the right, had sent a thousand men to meet the Burgundians. The lieutenant of Clodoald had then sallied out from the great tête de pont with his two thousand warriors. Drawing up half his force in a square, on the river side, with his front towards the lower town and his right supported by the tête de pont, he had dispatched the other half in all haste against the Frank troops on their way to oppose the passage.
This troop, taken in flank and thinned by the darts hurled at them by the Burgundians in their boats, was broken up, and fled in utter confusion. The Franks remaining in the lower town, now learning that Childebert's army was attacked on the north, were uncertain whether they should march towards the southern side to support the troop lower down the river on the right bank, or betake themselves to the bridge of rafts to assist Childebert's army. This indecision rendered the attack on the Burgundians drawn up in square near the great tête de pont inefficient, and permitted the two thousand men who made the sortie to return without serious loss. The sortie on the north encountered more trying fortunes; it had left in the woods more than two hundred dead, and brought home as many wounded.
The Franks had lost in these two conflicts more than six hundred men, without reckoning the wounded. Far from yielding to despondency, however, both chiefs and soldiers were full of rage, believing they should take the city in a few days, and that they had before them a garrison quite disposed to capitulate, so depressed did they suppose the Burgundians to have become by the capture of Autun: in twenty-four hours they had lost more than a thousand men, without having even approached the ramparts.
The wounded Burgundians remaining in their hands were decapitated; and their heads, stuck on long poles, were ranged in a line at a hundred paces from the advanced work. This, however, did not constitute a countervallation sufficient to protect them from the sorties of the besieged. It was therefore decided that the army on the north side should dig a ditch at two hundred paces from the advanced work, which should extend from the river valley to that of the rivulet; the ditch to be about two thousand paces long, and behind this ditch, with the earth dug out and barricades (of branches), an intrenchment was to be raised. They could thus in the first place obviate any attack of the besieged at this point. In the second place, it was resolved to seize the great tête de pont. The only communication with the outside then left to the besieged would be the valley of the rivulet; but this valley was almost impracticable, full as it was of bogs and marshes; so that the inhabitants of the city could attempt nothing on this side. As to assistance from without, it was deemed out of the question then to expect any; in any case, to prevent the besieged from issuing by the eastern gate, a well-guarded work should be raised in front of it; next, to prevent the besieged from getting provisions, the country on the left bank of the river should be devastated. As regarded the aqueduct, it was discovered and cut off.
These measures resolved upon, the besiegers set to work without loss of time. But Clodoald, who had been present at more than one siege, knew by experience that a garrison which had no expectation of help from without, has but one means of safety, viz. to allow the besieger no respite, especially at the commencement of the investment, when the enemy had not yet been able to complete his works and effect a close siege. Without knowing exactly what the army of the Franks had in contemplation, he knew its numerical force, and did not doubt that it commanded the services of some Latin engineers, as such was the case at the siege of Autun. Clodoald therefore divided his troops into eight bodies. The inclosure [See [Fig. 16].] being defended by forty-four towers, eleven hundred and eighty men were required to guard them, reckoning twenty-five men for each of the thirty-six towers of this inclosure, and thirty-five for each of the eight towers of the gates, or seventy men for each gate and its works. The post of each tower, it must be understood, was, in conformity with the military usages of the time, intrusted with the guard of the neighbouring curtain. The guard of the northern outwork required two hundred men; for the place d'armes on the south, and the têtes de pont, five hundred men; to garrison the stronghold (Castellum) one hundred men; to watch the rampart on the north descending from the angle of the city to the river, and to guard its banks, six hundred men. Total for the ordinary guard of the defences, two thousand five hundred and eighty men. He distributed this first body so that the best troops occupied the place d'armes, the têtes de pont and the advanced guard, as well as the front on this side. Clodoald constituted a second body of a thousand men, held in reserve in the middle of the city, to hasten at need to one or several of the points attacked. He had about six thousand men left, which he divided into six bodies of a thousand men each, thus distributed: two in the part of the town situated between the cité and the river, two in the neighbourhood of the northern gate, and two near the eastern gate. These six bodies were to be ready to make a sortie whenever the order was given.
Clodoald retained under his own direct command the thousand men in reserve lodged in the middle of the cité. Then he provided for the wants of the garrison and the inhabitants living within the walls. A great quantity of provisions had been brought into the town by means of requisitions and according to Roman usage. These provisions were stored in the stronghold. The flocks and herds were driven to graze on the slopes of the plateau on the south and east. Timber in considerable quantity had also been laid in store. It was ranged along the interior of the curtain walls. In addition to its walls the town had vast cisterns, supplied by the aqueduct. This being cut off, Clodoald had the rain-water from the roofs collected in channels which led into these cisterns. Moreover, in the part of the town situated between the ramparts and the river there was a fine spring capable of supplying all the upper part of this quarter.
Clodoald looked carefully to the lodging of his troops. Many of the soldiers had their families in the town; he would not allow the defenders to lodge in their houses. He had the public buildings arranged to receive the seven thousand men who did not habitually occupy the ramparts. Those who were charged with the guard were well lodged in the towers, the public buildings of the quarter, or outside the ramparts. Clodoald, as has been said, enjoyed the full confidence of his troops before the arrival of the Franks; but after the successful affairs of the first day, his men considered him as a kind of Providence, and blindly obeyed him. Accordingly, these arrangements were readily accepted and carried into execution. In details he had adopted the composition of the Roman cohort, and every chief of a corps was responsible for the execution of the orders he received under pain of death. As for the inhabitants, they were obliged to lend assistance whenever required; a refusal was capitally punished.
Gondomar, whom we have scarcely had occasion to mention hitherto, inhabited the Castellum; and Clodoald manifested the greatest respect for him, acting as he said only according to his instructions; but for the garrison, the veritable chief was Clodoald.