Augustus Completes the Conquest in the Cantabrian Wars
Ten years and 70,000 troops to subdue the last free corner of Iberia
Quick facts
- War duration
- 27-19 BCE (decade-long)
- Roman troop strength
- Six legions, 70,000+ legionaries and auxiliaries
- Provinces created afterward
- Baetica, Lusitania, Tarraconensis
- Resource driving the campaign
- Cantabrian gold and mineral mines
What happened
Two centuries after Rome first landed in Spain, the mountainous north remained unconquered. The Cantabri and Astures, described by the World History Encyclopedia as the last independent Celtic nations of Hispania, resisted Roman rule so fiercely that Emperor Augustus personally commanded six legions, more than 70,000 legionaries and auxiliaries, against them starting in 27 BCE. The war dragged on for a decade before the major fighting ended in 19 BCE, with Rome forced to station a legion in the region for another seventy years to hold it. Augustus reorganized the whole peninsula afterward into the provinces of Baetica, Lusitania, and Tarraconensis.
Why it matters
The Cantabrian Wars completed Rome's conquest of Iberia after roughly two centuries of intermittent fighting, finally bringing the entire peninsula, including its most stubborn interior region, under a single imperial administration that would last for the next four centuries.
How we know
The Cantabrian Wars are documented in Roman historical sources of the Augustan period and in modern military-historical analysis of the Roman legions deployed, which the World History Encyclopedia lists by name and troop strength.
Sources
- World History Encyclopedia. Legions of Spain, Roman Africa & Egypt · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- World History Encyclopedia. Timeline: Iberia · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
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Part of a timelineHistory of Spain27 events · Iberian tribes, Roman emperors, a caliphate at Cordoba, and a Reconquista that took nearly 800 years to finishView all →