First Marcomannic War Initial invasions By the early 160s AD, mounting pressures along the Rhine and Danube frontiers led several Germanic tribes to invade Roman territory. Between 162 and 165, incursions by the
Chatti and
Chauci into
Raetia and
Germania Superior were repelled. In late 166, thousands of
Langobardi and
Lacringi (possibly the Obii) crossed into
Pannonia. These movements increased pressure on other tribes along the Roman frontier. The invaders were quickly defeated by local forces, including detachments from the
Legio I Adiutrix under a commander named Candidus and the
Ala Ulpia contariorum under
Marcus Macrinius Avitus Catonius Vindex. Despite the swift victory, the incursion marked the beginning of a broader crisis.
Marcus Iallius Bassus, governor of Pannonia, initiated negotiations with eleven tribes. The Marcomannic king
Ballomar, a Roman client, mediated and dismissed the raid as unrepresentative. A truce was reached and the tribes withdrew, though no permanent agreement followed. As Rome was still engaged in war with Parthia, the resolution—considered a
bellum suspensum—was seen as a diplomatic success, though the identities of the original raiders remain uncertain.
First Roman expedition in Pannonia (168) The
Antonine Plague severely limited Roman responses in the late 160s. A punitive expedition planned by Marcus Aurelius was postponed until 168. That spring, Marcus and Lucius Verus departed Rome and established headquarters at
Aquileia. They reorganized defenses in Italy and Illyricum, raised the
Legio II Italica and
Legio III Italica, and crossed the Alps into Pannonia. The approach of the imperial army reportedly prompted the Marcomanni and
Victuali to withdraw and pledge good conduct. The emperors returned to Aquileia for winter quarters, but in January 169, Lucius Verus suffered a fatal stroke en route and died. Marcus returned to Rome to oversee his funeral and deification.
Campaign against the Iazyges and the Germanic invasion of Italy In autumn 169, Marcus Aurelius, accompanied by his son-in-law
Claudius Pompeianus, resumed the campaign. To finance the war effort, Marcus auctioned off imperial property—a measure historian
Michael Kulikowski describes as the only viable alternative to raising taxes. The primary Roman objective was to punish the
Iazyges, a Sarmatian people inhabiting the region between the Danube and
Roman Dacia. Early in the campaign, the Iazyges killed
Marcus Claudius Fronto, the governor of Lower
Moesia. While the Roman army was preoccupied, other tribes launched opportunistic raids across the frontier. In the east, the
Costoboci crossed the Danube, pillaging
Thrace and reaching as far south as
Eleusis, where they destroyed the sanctuary of the
Eleusinian Mysteries, but Rome reclaimed the Balkans with support from the port of Salonae in Dalmatia. . A more serious threat came from the Marcomanni in the west. Led by King
Ballomar, they formed a coalition of Germanic tribes, crossed the Danube, and defeated a Roman force of 20,000 near
Carnuntum, in what is sometimes called the
Battle of Carnuntum. They then advanced south, ravaging
Noricum and reaching northern Italy. The Marcomanni destroyed
Oderzo (Opitergium) and besieged
Aquileia, marking the first hostile incursion into Italy since the
Cimbri invasion of 101 BC.
Titus Furius Victorinus, the
Praetorian prefect, attempted to relieve the city but was defeated and likely killed, though some sources attribute his death to plague.
Roman counter-offensive and defeat of the Marcomanni . An unidentified "rain god" (top right) saves the Roman army. In response to the Marcomannic invasion, Marcus Aurelius reoriented Roman priorities and dispatched reinforcements from other frontiers. Command was entrusted to
Tiberius Claudius Pompeianus, with the future emperor
Pertinax serving under him. A new defensive zone, the
Praetentura Italiae et Alpium, was established to safeguard northern Italy, and the
Danube fleet was strengthened.
Aquileia was relieved, and by late 171, invading forces had been expelled from Roman territory. Meanwhile, Rome pursued diplomatic efforts to divide its adversaries. Peace treaties were signed with the
Quadi and
Iazyges, while the
Hasdingi Vandals and
Lacringi became Roman allies. During 172, Roman forces crossed the Danube into Marcomannic territory to push back the invasions undertaken by the various
Germanic peoples. Although specific details are scarce, the campaign resulted in the subjugation of the Marcomanni and their allies, the
Naristi (or Varistae) and the
Cotini. Marcus Aurelius added the title "
Germanicus" to his
cognomen. By 173, the Romans began to turn on the Quadi, who had violated their treaty. The campaign culminated in the so-called "Miracle of the Rain," in which the surrounded
Legio XII Fulminata was saved by a sudden storm. Ancient accounts differ:
Cassius Dio attributed the event to an Egyptian magician invoking
Mercury, while Christian writers like
Tertullian claimed it was the result of Christian prayer. In the same year,
Didius Julianus, commanding the Rhine frontier, repelled invasions by the
Chatti and
Hermunduri, while the
Chauci raided the coast of
Gallia Belgica. In 174, another campaign was launched against the Quadi. After deposing the pro-Roman king
Furtius, they elevated
Ariogaesus, whom Marcus refused to recognize. Marcus captured and exiled him to
Alexandria. The Quadi were subdued and compelled to provide hostages, auxiliary troops, and accept Roman garrisons.Following the subjugation of the Quadi, Marcus Aurelius focused on the
Iazyges, who occupied the plains along the
Tisza River—a campaign known as the
expeditio sarmatica. After a series of Roman victories, the Iazyges surrendered in 175. Their king, Zanticus, returned 100,000 Roman prisoners and provided 8,000 cavalry auxiliaries, of whom 5,500 were dispatched to
Britain. In recognition of the victory, Marcus adopted the title "
Sarmaticus". Marcus may have intended to consolidate the region by forming two new provinces,
Marcomannia and
Sarmatia, incorporating modern-day
Czech Republic and
Slovakia. However, these plans were interrupted by the rebellion of
Avidius Cassius, governor of Syria, who declared himself emperor. Marcus marched east with his army, accompanied by auxiliary detachments from the Marcomanni, Quadi, and Naristi, under the command of
Marcus Valerius Maximianus. After suppressing the revolt, Marcus returned to Rome—the first time in nearly eight years. On 23 December 176, he and his son
Commodus celebrated a joint
triumph for victories over the Germans and Sarmatians ("
de Germanis" and "
de Sarmatis"). The
Column of Marcus Aurelius was later erected in Rome to commemorate the campaigns, modeled after
Trajan's Column.
Second Marcomannic War , a Roman
castellum on the left bank of
Danube in
Slovakia Although Marcus Aurelius celebrated his victories in 176, hostilities resumed the following year. In 177, the
Quadi rebelled, soon joined by the
Marcomanni. Marcus once again marched north to launch a second campaign, the
secunda expeditio Germanica. He arrived at
Carnuntum in August 178 and led Roman forces into hostile territory, targeting first the Marcomanni, then the Quadi between 179 and 180. In a decisive engagement near
Laugaricio (modern-day
Trenčín, Slovakia), Roman forces under
Marcus Valerius Maximianus defeated the Quadi. The survivors retreated deeper into
Germania Magna, where
Publius Tarrutenius Paternus, the praetorian prefect, secured another major victory. However, on 17 March 180, Marcus Aurelius died at
Vindobona (modern
Vienna). His son and successor,
Commodus, showed little interest in continuing the campaign. Ignoring the counsel of his generals, Commodus negotiated peace with the Marcomanni and Quadi. He returned to Rome later that year and celebrated a triumph on 22 October 180.
Third Marcomannic War Following Marcus Aurelius’s death, operations continued beyond the Danube. Roman forces campaigned against the
Iazyges, the
Buri, and the so-called "free Dacians" inhabiting the region between the Danube and
Roman Dacia. Details of this phase are sparse, but commanders included
Marcus Valerius Maximianus,
Pescennius Niger, and
Clodius Albinus. An inscription (
CIL III 5937) refers to a campaign against the
Lugii or Buri (
Expeditio Burica). These victories were evidently sufficient for Commodus to adopt the title "
Germanicus Maximus" by 182. ==Aftermath==