Whilst Cæsar adopted these measures, the Gauls, having convoked an assembly of their principal chiefs, probably at Bibracte, decided not to collect all their men able to bear arms, as Vercingetorix wished, but to demand from each people a certain contingent, for they dreaded the difficulty of providing for so large and so confused a multitude, and of maintaining order and discipline. The different states were required to send contingents, the total of which was to amount to 283,000 men; but, in reality, it did not exceed 240,000. The cavalry amounted to 8,000.[529] The Bellovaci refused their contingent, declaring that they intended to make war on their own account, at their own will, without submitting to anybody’s orders. Nevertheless, at the instance of Commius, their host, they sent 2,000 men. This same Commius, we have seen, had in previous years rendered signal service to Cæsar in Britain. In return for which, his land, that of the Atrebates, freed from all tribute, had recovered its privileges, and obtained the supremacy over the Morini. But such was then the eagerness of the Gauls to re-conquer their liberty and their ancient glory, that all feelings of gratitude and friendship had vanished from their memory, and all devoted themselves body and soul to the war. The numbering and the review of the troops took place on the territory of the Ædui. The chiefs were named; the general command was given to the Atrebatan Commius; to the Æduans Viridomarus and Eporedorix, and to the Arvernan Vercasivellaunus, cousin of Vercingetorix. With them were joined delegates from each country, who formed a council of direction for the war. They began their march towards Alesia, full of ardour and confidence: each was convinced that the Romans would retreat at the mere sight of such imposing forces, especially when they found themselves threatened at the same time by the sallies of the besieged, and by an exterior army powerful in infantry and in cavalry.