Between 241 and 237 BCE, as Carthage fought its Mercenary War, Rome seized Sardinia and Corsica. Iron-gray seas carried Roman ships into Caralis and Aleria while Carthage, bled by mutiny, could not resist. Annexation tightened Rome’s grip on the western Mediterranean [16].
What Happened
The ink on Lutatius’s treaty had barely dried when Carthage plunged into the Mercenary (Truceless) War, a brutal struggle with its own unpaid soldiers. As rebel camps flared near Tunis and along the Bagradas, Rome watched the crisis from the Capitoline and saw opportunity across iron-gray seas [16].
Sardinia’s port at Caralis (Cagliari) and Corsica’s anchorage at Aleria guarded routes between Sicily and the Tyrrhenian coast. With Carthaginian authority collapsing and reports of defection from island garrisons, Roman envoys turned into Roman ships. The Senate issued demands; fleets moved; magistrates followed [16].
By 237 BCE, both islands answered to Rome. The sounds of transition—oarlocks creaking into Caralis, nails hammered into new standards, Latin orders shouted along Corsican quays—carried farther than their literal echoes. Carthage protested; Rome ignored it. The seizure added a province and removed staging grounds Carthage needed to rebuild at sea [16].
On Sardinia’s plains and Corsica’s rugged ridges, Roman administrators duplicated Sicilian practice: tithes, courts, and a garrison footprint sufficient to collect revenue and guard shipping. The Tyrrhenian triangle—Sicily, Sardinia, Corsica—now flew scarlet, a maritime frame around Italy’s west coast [16].
Carthage, already counting out 3,200 talents from the 241 settlement, now lost two more stepping stones. With the central islands gone, Iberia looked even more essential. That turn will carry Barcid commanders to the Ebro and Numantian plains—and bring Saguntum into Rome’s diplomatic crosshairs [16].
Why This Matters
The annexation hurt Carthage twice: it robbed the city of two strategic bases and further demonstrated that Roman diplomacy would act with steel when rivals were weak. The western routes from Carthage to Sicily now lay behind Roman-controlled islands, a logistical vice on Punic movement [16].
It also extends the theme of “Treaties as Disarmament.” Rome exploited the postwar legal environment—and Carthage’s internal crisis—to reduce a rival’s reach without a set-piece battle. Administration followed swiftly, normalizing a new map [16].
For Rome, Sardinia and Corsica enriched the provincial toolkit learned in Sicily. For Carthage, the loss sharpened the imperative to mine Iberian silver and recruit Iberian and Numidian fighters. The islands’ transfer is a quiet hinge between the First War’s conclusion and the Second War’s ignition [16].
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