Drusus' Germanic campaign

Prelude

Rome had only a small military presence in the Rhineland at that time, conducting limited punitive expeditions. Augustus believed imperial prosperity depended on expansion, and Germania became the next focus. In 17 or 16 BC, the Sicambri, Usipetes, and Tencteri captured and executed Roman soldiers east of the Rhine, then crossed the river and defeated Legio V Alaudae under Marcus Lollius, capturing its aquila in what became known as the Clades Lolliana. Augustus responded by strengthening the Roman military presence in Gaul, and a counterattack by Lollius and Augustus forced the tribes to seek peace.

Campaign of 11{{nbs}}BC

Drusus began his 11 BC land campaign by targeting the Usipetes, who quickly submitted, followed by the Tencteri. Roman forces then constructed a complex bridge over the Lippe River, likely near modern-day Olfen. When the legions entered Sugambrian territory between the Lippe and Ruhr, they found it undefended because the Sugambrian warriors had marched south to confront the Chatti, hoping to pressure them into an anti-Roman alliance. Relations between the Chatti and Rome had been relatively peaceful since the Gallic Wars, and as recently as 12 BC the Chatti were the only tribe known to have refused participation in an alliance against Rome.

The Sugambrian intervention may have shifted dynamics, with some Chatti factions aligning with Rome’s enemies, possibly under the influence of the powerful Suebi. After devastating the undefended Sugambri and subjugating the Tencteri south of the Ruhr, the legions advanced toward the Weser River, possibly following the Westphalian Hellweg or a more southern route. The Weser was not crossed; according to Cassius Dio, Drusus turned back due to supply concerns, winter, and a bad omen—a swarm of bees in the camp.

Pliny the Elder notes the bees settled during the fighting at Arbalo and were seen as a favorable sign given a Roman victory there.

Campaign of 9{{nbs}}BC

After winning the consular elections for 9 BC, Drusus led three legions with auxiliaries from Mainz, first against the Chatti and then against the Suebi, with considerable efforts and Roman losses reported by Cassius Dio. Simultaneously, a legate probably invaded the Sugambri region from Xanten with two legions, isolating enemy forces and increasing devastation. After successes against the Suebi, Drusus turned north and crossed the Werra at Hedemünden, which Dio apparently considered the upper Weser.

The legions tried to confront the Cherusci, who retreated into forests or eastward. A devastating campaign, perhaps with the united army, led Drusus as the first Roman general to reach the Elbe. The Roman camp at Hedemünden ensured supplies, and archaeological traces provide clues to movement lines. After crossing the Werra, the army moved northeast down the Leine to the valley exit, where east-west connections allowed a northern bypass of the Harz Mountains and advance to the Elbe, perhaps near Barby.

The advance stalled at the Elbe, possibly due to supply problems, flooding, or military limits. Dio reports Drusus wanted to cross but was persuaded to turn back by a woman of superhuman size who said his end was near; the account may be a topos to justify the turnaround, reminiscent of Alexander the Great at the Hyphasis.

Campaigns of Tiberius in 8{{nbs}}BC

Tiberius’s command marked a shift from Drusus’s audacious campaigns to a more politically focused approach. No military engagements are documented for 8 BC, yet Cassiodorus reports that Tiberius secured the submission of all Germanic tribes between the Rhine and the Elbe, leading Velleius Paterculus to claim the region was left almost as a tributary province. These accounts likely overstate Roman dominance but indicate a successful conclusion to the war.

Probably in spring 8 BC, Augustus declined to negotiate with Germanic tribes seeking peace, insisting on Sugambri participation, isolating that tribe. The Sugambri eventually dispatched distinguished men as emissaries, who were detained by the Romans—a breach of customary law—and died by suicide in captivity. The removal of anti-Roman leadership facilitated the rise of amenable princes. A significant portion of the tribe, Suetonius mentions 40,000 individuals, were settled on the left bank of the Rhine between Kleve and Krefeld; recent scholarship suggests this resettlement was not necessarily forced.

Under observation of legions in Xanten, the resettled Sugambri integrated with local tribes and possibly some Suebi, forming the Cugerni. The fate of those east of the Rhine is unclear; they may have merged with the Usipetes and Tencteri or persisted as the Gambrivii or Marsi.