The Helvetii (Latin: Helvētiī [hɛɫˈweːti.iː], Gaulish: *Heluētī), anglicized as Helvetians, were a Celtic[2] tribe or tribal confederation[3] occupying most of the Swiss plateau at the time of their contact with the Roman Republic in the 1st century BC.
The Alemanni and Burgundians established permanent settlements in the Swiss plateau in the 5th and 6th centuries, resulting in the early medieval territories of Alemannia (Swabia) and Upper Burgundy.
Caesar does not explicitly name the tribal authorities prosecuting the case and gathering men to apprehend Orgetorix, but he refers to them by the Latin terms civitas ("state" or "tribe") and magistratus ("officials").
[20] In his Natural History (c. 77 AD), Pliny provides a foundation myth for the Celtic settlement of Cisalpine Gaul in which a Helvetian named Helico plays the role of culture hero.
Helico had worked in Rome as a craftsman and then returned to his home north of the Alps with a dried fig, a grape, and some oil and wine, the desirability of which caused his countrymen to invade northern Italy.
This interpretation is now generally discarded,[23] as Posidonius' narrative makes it more likely that the country some of the Helvetians left in order to join in the raids of the Teutones, Cimbri, and Ambrones was in fact southern Germany and not Switzerland.
That the Helvetians originally lived in southern Germany is confirmed by the Alexandrian geographer Claudius Ptolemaios (c. 90–168 AD), who tells us of an Ἐλουητίων ἔρημος (i.e. "Helvetic deserted lands") north of the Rhine.
[25] The abandonment of this northern territory is now usually placed in the late 2nd century BC, around the time of the first Germanic incursions into the Roman world, when the Tigurini and Toygenoi/Toutonoi are mentioned as participants in the great raids.
In 1890, so-called Potin lumps were found, whose largest weights 59.2 kilograms (131 lb) at the Prehistoric pile dwelling settlement Alpenquai in Zürich, Switzerland.
According to Caesar, the captured Roman soldiers were ordered to pass under a yoke set up by the triumphant Gauls, a dishonour that called for both public as well as private vengeance.
[32] Caesar is the only narrative source for this episode, as the corresponding books of Livy's histories are preserved only in the Periochae, short summarising lists of contents, in which hostages given by the Romans, but no yoke, are mentioned.
They split up in two groups in 103 BC, with the Teutones and Ambrones marching on a western route through the Provincia and the Cimbri and Tigurini crossing the eastern Alps (probably by the Brenner Pass).
[35] The nobleman Orgetorix is presented as the instigator of a new Helvetian migration, in which the entire tribe was to leave their territory and, according to Caesar, to establish a supremacy over all of Gaul.
This exodus was planned over three years, in the course of which Orgetorix conspired with two noblemen from neighbouring tribes, Casticus of the Sequani and Dumnorix of the Aedui, that each should accomplish a coup d'état in his own country, after which the three new kings would collaborate.
When word of his aspirations to make himself king reached the Helvetii, Orgetorix was summoned to stand trial, facing execution on the pyre should he be found guilty.
For the time being, he averted a verdict by arriving at the hearing set for him with ten thousand followers and bondsmen; yet before the large force mustered by the authorities could apprehend him, he died under unexplained circumstances, the Helvetii believed by his own hand.
The Helvetii now chose the more difficult northern route through the Sequani territory, which traversed the Jura Mountains via a very narrow pass at the site of the modern Fort l'Écluse, but bypassed the Provincia.
Leaving the largest part of their supplies behind, the Helvetii covered around 60 km in four days, eventually reaching the lands of the Lingones (the modern Langres plateau).
[citation needed] Many other sites, for example the sanctuary at Mormont, do not exhibit any signs of damage for the period in question, and Celtic life continued seemingly undisturbed for the rest of the 1st century BC up to the beginning of the Roman era, with an accent rather on an increase in prosperity than on a "Helvetic twilight".
[46] Delbrück suggests an even lower number of 100,000 people, out of which only 16,000 were fighters, which would make the Celtic force about half the size of the Roman body of c. 30,000 men.
[49] Caesar himself does not appear as a triumphant victor in turn, being unable to pursue the Helvetii for three days, "both on account of the wounds of the soldiers and the burial of the slain".
It was certainly in the latter's personal interest to emphasise any kind of parallel between the traumatic experience of the Cimbrian and Teutonic incursions and the alleged threat that the Helvetii were to the Roman world.
The Tigurini's part in the destruction of L. Cassius Longinus and his army was a welcome pretext to engage in an offensive war in Gaul whose proceeds permitted Caesar not only to fulfil his obligations to the numerous creditors he owed money to, but also to further strengthen his position within the late Republic.
[50] In this sense, even the character of Divico, who makes his appearance in the Commentarii half a century after his victory over L. Cassius Longinus, seems more like another hackneyed argument stressing Caesar's justification to attack,[citation needed] than like an actual historical figure.
These colonies were probably established as a means of controlling the two most important military access routes between the Helvetian territory and the rest of Gaul, blocking the passage through the Rhône valley and Sundgau.
Some of the traditional Celtic oppida were now used as legionary garrisons, such as Vindonissa or Basilea (modern Basel); others were relocated, such as the hill-fort on the Bois de Châtel, whose inhabitants founded the new "capital" of the civitas at nearby Aventicum.
Like the other Gallic tribes, the Helvetii were organised as a civitas; they even retained their traditional grouping into four pagi[51] and enjoyed a certain inner autonomy, including the defence of certain strongholds by their own troops.
Aulus Caecina Alienus, a former supporter of Galba who was now at the head of a Vitellian invasion of Italy, launched a massive punitive campaign, crushing the Helvetii under their commander Claudius Severus and routing the remnants of their forces at Mount Vocetius, killing and enslaving thousands.
It has been proposed that the area inhabited by the Helvetians had extended beyond the Swiss plateau, far into what is now Baden-Württemberg, but had been displaced in the course of the Cimbrian War, some two generations prior to Caesar's invasion of Gaul.
In 260, when the Gallic Empire briefly seceded from Rome, emperor Gallienus withdrew the legions from the Rhine to fight the usurper Ingenuus, allowing the Alemanni to invade the Swiss plateau.