Heremus Helvetiorum

The Helvetii ( , Gaulish: *''Heluētī''), anglicized as Helvetians, were a Celtic tribe or tribal confederation occupying most of the Swiss plateau at the time of their contact with the Roman Republic in the 1st century BC. According to Julius Caesar, the Helvetians were divided into four subgroups or '' pagi.'' Of these, Caesar names only the Verbigeni and the Tigurini, while Posidonius mentions the Tigurini and the Tougeni (). They feature prominently in the ''Commentaries on the Gallic War,'' with their failed migration attempt to southwestern Gaul (58 BC) serving as a catalyst for Caesar's conquest of Gaul.

The Helvetians were subjugated after 52 BC, and under Augustus, Celtic oppida, such as Vindonissa or Basilea, were re-purposed as garrisons. In AD 68, a Helvetian uprising was crushed by Aulus Caecina Alienus.
The Swiss plateau was at first incorporated into the Roman province of Gallia Belgica (22 BC), later into Germania Superior (AD 83).
The Helvetians, like the rest of Gaul, were largely Romanized by the 2nd century.
In the later 3rd century, Roman control over the region waned, and the Swiss plateau was exposed to the invading Alemanni. 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.

Name

They are mentioned as ''Helvetii'' by Cicero (mid-1st c. BC), Caesar (mid-1st c. BC) and Tacitus (early 2nd c. AD), as ''Helvetiorum'' by Livy (late 1st c. BC), as ''Helveti'' by Pliny (1st c. AD), and as ''Elouḗtioi'' (Ἐλουήτιοι) by Ptolemy (2nd c. AD)., s.v. ''Helvetii''.

The Gaulish ethnic name ''Helvetii'' is generally interpreted as ''(h)elu-ētioi'' ('rich in land'), from ''elu''- ('numerous', cf. OIr. ''il'') attached to ''etu''- ('grassland'; cf. OIr. ''iath''). The presence of the initial ''h''-, remnant of a previous ''p''- (PIE ''*pelh₁u-'' > Celt. ''helu-'' > ''elu-''), attests of an archaic formation.

The earliest attestation of the name is found in a ''graffito'' on a vessel from Mantua, dated to c. 300 BC. The inscription in Etruscan letters reads ''eluveitie,'' which has been interpreted as the Etruscan form of the Celtic ''elu̯eti̯os'' ("the Helvetian"), presumably referring to a man of Helvetian descent living in Mantua.

Tribal organisation

Of the four Helvetian ''pagi'' or sub-tribes, Caesar names only the Verbigeni (''Bell. Gall.'' 1.27) and the Tigurini (1.12), Posidonius the Tigurini and the Tougeni ().
There has been substantial debate in Swiss historiography (beginning with Felix Stähelin 1927) on whether the Tougeni may or may not be identified with the Teutones mentioned by Titus Livius.

According to Caesar, the territory abandoned by the Helvetii had comprised 400 villages and 12 ''oppida'' (fortified settlements). His tally of the total population taken from captured Helvetian records written in Greek is 263,000 people, including fighting men, old men, women and children. However, the figures are generally dismissed as too high by modern scholars (see hereafter).

Like many other tribes, the Helvetii did not have kings at the time of their clash with Rome but instead seem to have been governed by a class of noblemen (Lat. ''equites''). When Orgetorix, one of their most prominent and ambitious noblemen, was making plans to establish himself as their king, he faced execution by burning if found guilty. 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").

History

Earliest historical sources and settlement

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.

The Greek historian Posidonius (c. 135–50 BC), whose work is preserved only in fragments by other writers, offers the earliest historical record of the Helvetii. Posidonius described the Helvetians of the late 2nd century BC as "rich in gold but peaceful," without giving clear indication to the location of their territory. His reference to gold washing in rivers has been taken as evidence for an early presence of the Helvetii in the Swiss plateau, with the Emme as being one of the gold-yielding rivers mentioned by Posidonius. This interpretation is now generally discarded, 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. Tacitus knows that the Helvetians once settled in the swath between Rhine, Main, and the Hercynian forest. 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.

At the later Vicus ''Turicum'', probably in the first 1st century BC or even much earlier, the Celts settled at the Lindenhof Oppidium. In 1890, so-called ''Potin lumps'' were found, whose largest weights at the Prehistoric pile dwelling settlement '' Alpenquai'' in Zürich, Switzerland. The pieces consist of a large number of fused Celtic coins, which are mixed with charcoal remnants. Some of the 18,000 coins originate from the ''Eastern Gaul'', others are of the ''Zürich'' type, that were assigned to the local ''Helvetii'', which date to around 100 BC. The find is so far unique, and the scientific research assumes that the melting down of the lump was not completed, therefore the aim was to form cultic offerings. The site of the find was at that time at least from the lake shore, and probably to three meters deep in the water.''Keltisches Geld in Zürich: Der spektakuläre «Potinklumpen»''. Amt für Städtebau der Stadt Zürich, Stadtarchäologie, Zürich October 2007. There's also an island sanctuary of the Helvetii in connection with the settlement at the preceding Oppidi Uetliberg on the former ''Grosser Hafner'' island, as well as the settlement ''Kleiner Hafner'' at the ''Sechseläuten square'' on the effluence of the Limmat on Zürichsee lake shore.

First contact with the Romans

The Germanic tribes of the Cimbri and Ambrones probably reached southern Germany around the year 111 BC, where they were joined by the Tigurini, and, probably the Teutoni-Toutonoi-Toygenoi. (The precise identity of the latter group is unclear).

The tribes began a joint invasion of Gaul, including the Roman Provincia Narbonensis, which led to the Tigurini's victory over a Roman army under L. Cassius Longinus near Agendicum in 107 BC, in which the consul was killed. 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. 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.

In 105 BC, the allies defeated another Roman army near Arausio and went on to harry Spain, Gaul, Noricum, and northern Italy. 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). While the Teutones and Ambrones were slaughtered in 102 BC by Gaius Marius near Aquae Sextiae, the Cimbri and the Tigurini wintered in the Padan plain. The following year, Marius virtually destroyed the Cimbri in the battle of Vercellae. The Tigurini, who had planned on following the Cimbri, turned back over the Alps with their booty and joined those of the Helvetians who had not participated in the raids.

Caesar and the Helvetian campaign of 58 BC

Prelude

The Helvetii were the first Gallic tribe of the campaign to be confronted by Caesar. He narrates the events of the conflict in the opening sections of ''Commentarii de Bello Gallico''. Due to the political nature of the ''Commentarii'', Caesar's purpose in publicizing his own achievements may have distorted the significance of events and the motives of those who participated.

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.

Nevertheless, the Helvetii did not give up their planned emigration, but burned their homes in 58 BC. They were joined by a number of tribal groups from neighbouring regions: the Raurici, the Latobrigi, the Tulingi and a group of Boii, who had besieged Noreia. They abandoned their homes completely with the intention of settling among the Santones (Saintonge). The easiest route would take them through the Rhône valley, and thus through the Roman '' Provincia Narbonensis''.

Battle of the Saône

When they reached the boundaries of the Allobroges, the northernmost tribe of the ''Provincia'', they found that Caesar had already dismantled the bridge of Geneva to stop their advance. The Helvetians sent “the most illustrious men of their state” to negotiate, promising a peaceful passage through the ''Provincia''. Caesar stalled them by asking for some time for consideration, which he used to assemble reinforcements and to fortify the southern banks of the Rhône. When the embassy returned on the agreed-upon date, he was strong enough to bluntly reject their offer. 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''. After ravaging the lands of the Aedui tribe, who called upon Caesar to help them, they began the crossing of the Saône, which took them several days. As only a quarter of their forces were left on the eastern banks, Caesar attacked and routed them. According to Caesar, those killed had been the Tigurini, on whom he had now taken revenge in the name of the Republic and his family.

After the battle, the Romans quickly bridged the river, thereby prompting the Helvetii to once again send an embassy, this time led by Divico, another figure whom Caesar links to the ignominious defeat of 107 BC by calling him ''bello Cassio dux Helvetiorum'' (i.e. “leader of the Helvetii in the Cassian campaign”). What Divico had to offer was almost a surrender, namely to have the Helvetii settle wherever Caesar wished them to, although it was combined with the threat of an open battle if Caesar should refuse. Caesar demanded hostages to be given to him and reparations to the Aedui and Allobroges. Divico responded by saying that “they were accustomed to receive, not to give hostages; a fact the Roman people could testify to“, this once again being an allusion to the giving of hostages by the defeated Romans at Agen.

Battle of Bibracte

In the cavalry battle that followed, the Helvetii prevailed over Caesar's Aedui allies under Dumnorix’ command, and continued their journey, while Caesar’s army was being detained by delays in his grain supplies, caused by the Aedui on the instigations of Dumnorix, who had married Orgetorix’ daughter. A few days later, however, near the Aeduan ''oppidum'' Bibracte, Caesar caught up with the Helvetii and faced them in a major battle, which ended in the Helvetii's retreat and the capture of most of their baggage by the Romans.

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). Caesar did not pursue them until three days after the battle, while still sending messengers to the Lingones warning them not to assist the Helvetii in any way. The Helvetii then offered their immediate surrender and agreed both to providing hostages and to giving up their weapons the next day. In the course of the night, 6000 of the Verbigeni fled from the camp out of fear of being massacred once they were defenceless. Caesar sent riders after them and ordered those who were brought back to be “counted as enemies”, which probably meant being sold into slavery.

Return of the migrants

In order for them to defend the Rhine frontier against the Germans, he then allowed the Helvetii, Tulingi and Latobrigi to return to their territories and to rebuild their homes, instructing the Allobroges to supply them with a sufficient supply of grain. Caesar does not mention the Raurici, who seem to have built a new ''oppidum'' at Basel-Münsterhügel upon their return. The Aedui were granted their wish that the Boii who had accompanied the Helvetii would settle on their own territory as allies in the ''oppidum'' Gorgobina. The nature of Caesar's arrangement with the Helvetii and the other tribes is not further specified by the consul himself, but in his speech
Pro Balbo
' of 56 BC, Cicero mentions the Helvetii as one among several tribes of ''foederati'', i.e. allied nations who were neither citizens of the Republic nor her subjects, but obliged by treaty to support the Romans with a certain number of fighting men.

Caesar's report of the numbers

According to the victor, tablets with lists in Greek characters were found at the Helvetian camp, listing in detail all men able to bear arms with their names and giving a total number for the women, children and elderly who accompanied them. The numbers added up to a total of 263,000 Helvetii, 36,000 Tulingi, 14,000 Latobrigi, 23,000 Rauraci, and 32,000 Boii, all in all 368,000 heads, 92,000 of whom were warriors. A census of those who had returned to their homes listed 110,000 survivors, which meant that only about 30 percent of the emigrants had survived the war.

Caesar's report has been partly confirmed by excavations near Geneva and Bibracte. However, much of his account has not yet been corroborated by archaeology, whilst his narrative must in wide parts be considered as biased and, in some points, unlikely. For a start, only one out of the fifteen Celtic ''oppida'' in the Helvetii territory so far has yielded evidence for destruction by fire. 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”. With the honourable status as ''foederati'' taken into account, it is hard to believe that the Helvetii ever sustained casualties quite as heavy as those given by the Roman military leader.

In general, numbers written down by ancient military authors have to be taken as gross exaggerations. What Caesar claims to have been 368,000 people is estimated by other sources to be rather around 300,000 (Plutarch), or 200,000 (Appian); in the light of a critical analysis, even these numbers seem far too high. Furger-Gunti considers an army of more than 60,000 fighting men extremely unlikely in the view of the tactics described, and assumes the actual numbers to have been around 40,000 warriors out of a total of 160,000 emigrants. 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. The real numbers will never be determined exactly. Caesar's specifications can at least be doubted by looking at the size of the baggage train that an exodus of 368,000 people would have required: Even for the reduced numbers that Furger-Gunti uses for his calculations, the baggage train would have stretched for at least 40 km, perhaps even as far as 100 km.

In spite of the now much more balanced numerical weight we have to assume for the two opposing armies, the battle seems far less glorious a victory than Caesar presented it to be. The main body of the Helvetii withdrew from the battle at nightfall, abandoning, as it seemed, most of their wagons, which they had drawn up into a wagon fort; they retreated northwards in a forced night march and reached the territory of the Lingones four days after the battle. What Caesar implies to have been a desperate flight without stopping could actually have been an ordered retreat of moderate speed, covering less than 40 km a day. 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“. However, it is clear that Caesar's warning to the Lingones not to supply his enemies was quite enough to make the Helvetii leaders once again offer peace. On what terms this peace was made is debatable, but as said before, the conclusion of a ''foedus'' casts some doubt on the totality of the defeat.

Questions of motive

As Caesar's account is heavily influenced by his political agenda, it is difficult to determine the actual motive of the Helvetii movement of 58 BC. One might see the movement in the light of a Celtic retreat from areas which were later to become Germanic; it can be debated whether they ever had plans to settle in the Saintonge, as Caesar claims (Bell. Gall. 1,10.). 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. 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, than like an actual historical figure. That the victor of Agen was still alive in 58 BC or, if yes, that he was physically still capable of undertaking such a journey at all, seems more than doubtful. Nevertheless, Divico became somewhat of a hero within the Swiss national feeling of the 19th century and in the course of the "Geistige Landesverteidigung" of the 20th century.

The Helvetii as Roman subjects

The Helvetii and Rauraci most likely lost their status as ''foederati'' only six years after the battle of Bibracte, when they supported Vercingetorix in 52 BC with 8,000 and 2,000 men, respectively. Sometime between 50 and 45 BC, the Romans founded the ''Colonia Iulia Equestris'' at the site of the Helvetian settlement ''Noviodunum'' (modern Nyon), and around 44 BC the '' Colonia Raurica'' on Rauracan territory. 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.

In the course of Augustus' reign, Roman dominance became more concrete. 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. First incorporated into the Roman province of Gallia Belgica, later into the Germania Superior and finally into the Diocletian province of Maxima Sequanorum, the former territories of the Helvetii and their inhabitants were as thoroughly romanised as the rest of Gaul.

The rising of 68/69 AD

What seems to have been the last action of the Helvetii as a tribal entity happened shortly after the death of emperor Nero in 68 AD. Like the other Gallic tribes, the Helvetii were organised as a ''civitas''; they even retained their traditional grouping into four '' pagi'' and enjoyed a certain inner autonomy, including the defence of certain strongholds by their own troops. In the civil war which followed Nero's death, the ''civitas Helvetiorum'' supported Galba; unaware of his death, they refused to accept the authority of his rival, Vitellius. The Legio XXI Rapax, stationed in Vindonissa and favouring Vitellius, stole the pay of a Helvetian garrison, which prompted the Helvetians to intercept Vitellian messengers and detain a Roman detachment. 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. The capital Aventicum surrendered, and Julius Alpinus, head of what was now seen as a Helvetian uprising, was executed. In spite of the extensive damage and devastations the ''civitas'' had already sustained, according to Tacitus the Helvetii were saved from total annihilation owing to the pleas of one Claudius Cossus, a Helvetian envoy to Vitellius, and, as Tacitus puts it, “of well-known eloquence”.

Legacy

Roman occupation in the aftermath of the Gallic Wars had pacified the Celtic-Germanic contact zone along the Rhine. The Suebi and Marcomanni who under Ariovistus had planned to invade Gaul were pushed back beyond the Black Forest, where they amalgamated into the future Alemanni.
The Romans allowed Germanic tribes such as the Ubii, Triboci, Nemetes and Vangiones to settle in the deserted areas left of the Rhine. On the right bank of the Upper Rhine, which according to the testimony of Tacitus (''Germania'' 28) had formerly also been occupied by the Helvetians, both the historical and archaeological records are sparse.
Ptolemy (2.4.11) in the 2nd century uses the term ''Eremus Helvetiorum'' (also rendered ''Heremus Helvetiorum'') "desolation of the Helvetians" to refer to this area (largely corresponding to modern Baden). The term was adopted by Aegidius Tschudi in the 16th century, and remains in use in modern historiography (German: '' Helvetier-Einöde'').
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.

The Swiss plateau was gradually romanized during the 1st to 3rd centuries.
The principal Roman settlements were the cities of Iulia Equestris (Nyon), Aventicum (Avenches), Augusta Raurica (Augst) and Vindonissa (Windisch). Evidence has also been found of almost twenty Roman villages ('' vici'') and hundreds of villas.Ducrey, p. 83.

In the course of Romanization, the Celtic polytheism of the Helvetians was syncretized with Roman religion. The Celtic deities came to be worshiped under the names of their Roman counterparts, and Roman gods acquired the names of local gods, such as ''Mars Caturix'', ''Mercurius Cissonius'' and ''Jupiter Poeninus''.
A major cultic center of Gallo-Roman religion, consisting of eight chapels or small temples, was found in Allmendingen near Thun. Deities worshipped at the site included Mars (presumably in lieu of Caturix) and Rosmerta as well as Mithras.

Although the Gaulish language had mostly been ousted by Latin by the 3rd century, many Celtic toponyms have survived in Switzerland. Of the ten largest present-day Swiss cities, at least six have Celtic placename etymologies,
and most major Swiss rivers have either Celtic or pre-Celtic names.

The order and prosperity of the ''Pax Romana'' ended with the Crisis of the Third Century. 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. There, cities, villages and most ''villae'' were raided or sacked by marauding bands. The numerous caches of coins recovered from the period between 250 and 280 attest to the severity of the crisis.Ducrey, Pierre (2006). "Die ersten Kulturen zwischen Alpen und Jura". ''Geschichte der Schweiz und der Schweizer'' (4th ed.), Schwabe, p. 101.

The Helvetii were re-discovered as the forebears of the Swiss in the early historiography of Switzerland, in the late 15th to early 16th century. Their name was adopted as the Latin equivalent of the designation ''Switzer'', and the Swiss Confederacy was given the Latin name of ''Republica Helvetiorum''. The name of the national personification of Switzerland, ''Helvetia'', and the country's contemporary Neo-Latin name, ''Confoederatio Helvetica'' (abbreviated CH), are derived from this tradition.

In 2015, the star 51 Pegasi, the first main-sequence star found to have an exoplanet, was named Helvetios after the Helvetii as part of the IAU's NameExoWorlds contest.

Celtic oppida in Switzerland

The distribution of La Tène culture burials in Switzerland indicates that the Swiss plateau between Lausanne and Winterthur was relatively densely populated. Settlement centres existed in the Aare valley between Thun and Bern, and between Lake Zurich and the river Reuss. The Valais and the regions around Bellinzona and Lugano also seem to have been well-populated; however, those lay outside the Helvetian borders.

Almost all the Helvetic ''oppida'' were built in the vicinity of the larger rivers of the Swiss midlands. Not all of them existed at the same time. For most of them, we do not have any idea as to what their Gaulish names might have been, with one or two possible exceptions.
Where a pre-Roman name is preserved, it is added in brackets. Those marked with an asterisk (*) were most likely occupied by neighbouring tribes (Raurici, Veragri, etc.) rather than the Helvetii.

* Altenburg-Rheinau
* Basel*
* Bern-Engehalbinsel (possibly ''Brenodurum''Bern, Engehalbinsel, Römerbad
)
* Bois de Châtel, Avenches
* Eppenberg
* Jensberg
* Genève (''Genava'')*
* Lausanne (''Lousonna'')
* Martigny (''Octodurus'')*
* Mont Chaibeuf*
* Mont Terri*
* Mont Vully

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