Nervii

Their territory corresponds to the central part of modern Belgium, including Brussels, and stretched southwards to Cambrai in French Hainaut.

During their first century BC Roman military campaign, Julius Caesar's contacts among the Remi stated that the Nervii were the most warlike of the Belgae.

Being one of the northerly Belgic tribes, with the Menapii to the west, and the Eburones to their east, they were considered by Caesar to be relatively uncorrupted by civilization.

To the north of the Haine, it also included what would become the medieval pagus of Brabant, making its northwestern border on the Scheldt (French Escaut, Dutch Schelde) river.

Caesar also mentions smaller tribes who were expected to contribute troops to Nervian forces; Levaci, Pleumoxii, Geidumni, Ceutrones, and Grudii.

[16] Tacitus, in his book Germania, says that in his time the Nervii and Treveri both claimed Germanic ancestry, similar to that of their mutual neighbours the Tungri, in order to distinguish them from the weaknesses of the Gauls.

[17] The Romans were not precise in their ethnography of northern barbarians: by "Germanic" Caesar may simply have meant "originating east of the Rhine" with no distinction of language intended.

[18][19] Luc van Durme summarizes competing evidence of Celtic and Germanic influence at the time of Caesar by saying that "one has to accept the rather remarkable conclusion that Caesar must have witnessed a situation opposing Celtic and Germanic in Belgium, in a territory slightly more to the south than the early medieval Romance–Germanic language border", but van Durme also accepts that "second century BC Germanisation did not block the celtisation coming from the south .

[23] Remarkably, given the archaeological evidence of a Celtic La Tène culture having been present in the pre-Roman past, Caesar reports that the Nervii had no cavalry.

[12] The Frasnes hoard, accidentally unearthed by foresters in 1864 near Frasnes-lez-Buissenal in Hainaut, along with coins associated with the Morini and the Nervii, also contained characteristically Gallic gold torques, one of which was in Alastair Bradley Martin's Guennol collection.

After the alliance broke up and some tribes surrendered, the Nervii, under the command of Boduognatus and aided by the Atrebates and Viromandui, came very close to defeating Caesar (the Atuatuci had also agreed to join them but did not arrive in time).

However Caesar grabbed a shield, made his way to the front line, and quickly organised his forces; at the same time, the commander of the tenth legion, Titus Labienus, attacked the Nervian camp.

[26] When Ambiorix and the Eburones rebelled in 53 BC, the remaining Nervii joined the uprising and besieged Quintus Tullius Cicero – brother of the orator – and his legion in their winter camp until they were relieved by Caesar in person.

[28] On the seventh day of the attack, a very high wind having sprung up, they began to discharge by their slings hot balls made of burned or hardened clay, and heated javelins, upon the huts, which, after the Gallic custom, were thatched with straw.

[29]The situation was recovered when a Nervian in the Roman camp was able to send a slave with a message, who managed to remain inconspicuous and get it to Caesar.

The Nervii and their allies, the Aduatuci, Eburones, Treveri and Menapii continued to prepare for war with the Romans, and sought assistance from the Germanic peoples east of the Rhine.

An inscription on a tablet indicated that the fort was built by the Sixth Cohort, under the charge of Gaius Valerius Pudens, a senator of consular rank.

A map of Gaul in the first century BC, showing the relative position of the Nervii tribe.
The three main early medieval pagi in the civitas of the Nervians, based on Deru's listing. Pagi: Orange = Cambrésis; Yellow = Hainaut ; Purple = Brabant. The shaded areas are modern Belgian provinces or French départements.
The medieval diocese of Cambrai was based upon the Roman civitas of the Nervii.