Rome needed two centuries and a brutal revolt to win Pannonia
The Roman province of Pannonia stretched across what is now western Hungary, eastern Austria, northern Croatia and parts of four other countries, bounded by the Danube. Rome's first step toward it came in 181 BC, but the region was only secured after a three-year uprising that exhausted its peoples.
In the Early Iron Age the land west of the Danube, Transdanubia, belonged to the Pannonians, a group of Illyrian tribes. Celtic newcomers later pushed in; the Scordisci settled in Syrmia in 279 BC after raiding as far as Delphi, and the arrivals disrupted the Amber Road that carried Baltic amber south. Independent tribes built fortified towns and minted coins bearing their leaders' faces, first copying Macedonian designs and then Roman ones.
Rome's advance began with the founding of Aquileia in 181 BC, the starting point of the Amber Road. Early campaigns failed to take Siscia, modern Sisak, a key site, so attention turned to the iron and silver mines of Noricum. The balance shifted as powers rose and fell: the Dacian king Burebista crushed the Scordisci, the Boii and the Taurisci, but his kingdom broke up after his death around 44 BC. In 35 BC Octavian captured Siscia after a month-long siege, claiming to guard against a Dacian threat that was largely a pretext.
The decisive phase, sometimes called the Bellum Pannonicum, was led by the future emperor Tiberius. He forced the Scordisci into alliance in 15 BC, took over from Agrippa after his death, and celebrated a triumph in 11 BC. Augustus later boasted that no Roman army had reached these peoples before him. Then in 6 AD the Breuci and Daesitiates, under two leaders both named Bato, launched the three-year Bellum Batonianum. Tiberius answered with scorched earth, and resistance ended in 9 AD.
Around 8 or 9 AD Illyricum was divided into Dalmatia and Pannonia. The absence of later revolts reflected exhaustion rather than consent: young Pannonian men were conscripted to serve elsewhere and rebel communities were resettled under military supervision. Claudius completed the occupation and began a fortified frontier, the limes, and Vespasian invested heavily in it. By then coins circulating north of the Drava showed Roman life had taken hold.
Source: Pannonia
