When these events were accomplished, Cæsar proceeded towards the Ædui, and received their submission. There he met the envoys of the Arverni, who promised to pay deference to his orders: he required from them a great number of hostages. Afterwards, he placed his legions in winter quarters. T. Labienus, with two legions and some cavalry, among the Sequani (Sempronius Rutilius was given him as a colleague); C. Fabius and L. Minucius Basilius, with two legions, among the Remi, in order to protect them against the Bellovaci, their neighbours; C. Antistius Reginus amongst the Ambluareti; T. Sextius among the Bituriges; C. Caninius Rebilus among the Ruteni, each with one legion. Q. Tullius Cicero and P. Sulpicius were established at Cabillonum (_Chalon_) and Matisco (_Mâcon_), in the land of the Ædui, on the Saône, to ensure the supply of provisions. Cæsar resolved to pass the winter at Bibracte.[536] He announced those events at Rome, where twenty days of public thanksgivings were decreed. [Sidenote: Details of the Excavations at Mont Auxois.] XIII. The excavations earned on round Mont Auxois, from 1862 to 1863, have brought to light, in nearly all points, the fosses of the Roman retrenchments. The following is the result:-- CAMPS.--Cæsar debouched upon Alesia by the mountain of Bussy (_see Plate 25_), and distributed his army round Mont Auxois: the legions encamped on the heights, and the cavalry was established on the lower grounds, near the streams. There were four camps of infantry, two of them, _A_ and _B_, on the mountain of Flavigny. Their form depends on that of the ground: they were shaped in such a manner that the retrenchments should, as far as possible, command the ground situated before them. On the side where it could have been attacked, that is, to the south, the camp _A_ presented formidable defences, to judge from the triple line of fosses which surround this part. (_See Plates 25 and 28._) We must, perhaps, suppose that it was occupied by Cæsar in person. The camp _B_ is more extensive. The vestiges of its _remblai_ are still visible at the present day, in the greatest part of its circuit, in consequence of this land having never been touched by the plough. It is the only known example of visible traces of a camp made by Cæsar. None of the camps of the mountain of Flavigny having been attacked, the excavations have only brought to light in the fosses a small number of objects. The entrances to the camps are at the places marked by arrows on _Plate 25_. A third camp of infantry was situated on the mountain of Bussy, at _C_.