Wars · VIII. The western imperial system under pressure
W080 The Rhine crossing, the western usurpations and the sack of Rome
Battles and sieges
Sack of Rome 410 ADThe movement of Vandals, Alans and Sueves across the Rhine, conventionally dated to the end of AD 406, coincided with a breakdown of imperial control and rival imperial claims. Constantine III crossed from Britain into Gaul. The western government confronted competing military threats while its own political leadership fractured.
Stilicho's execution in AD 408 removed a central commander. Alaric's negotiations and pressure on Italy escalated through sieges and changes of political alignment. Rome was sacked in August AD 410. That event was a profound symbolic shock, but neither the capture of Ravenna nor the end of the western government occurred at the same moment.
Command, forces and military problem
| Field | Dossier |
|---|---|
| Roman leadership | Honorius' government and competing western commanders |
| Opposing or rival parties | Alaric, rival Roman emperors and separate groups crossing the Rhine |
| Forces and capabilities | Fragmenting imperial armies, allied forces, urban defenses and mobile groups |
| Operational problem | Keep command and diplomacy functioning amid civil war and pressure on several regions. |
Extended campaign study
The account below develops the operations and their interpretation. Reported numbers and reconstructed tactical details retain the uncertainties described in the dossier.
The Three Sieges and the Sack (408–410)
What followed was not a war but a two-year negotiation conducted by siege, and the narrative relates it as the sources force: Alaric before Rome three times, asking each time for the settlement Ravenna would not grant. The first siege (winter 408–409) starved the city to cannibalism-rumor and was lifted for ransom — five thousand pounds of gold, thirty thousand of silver, the melted ornaments of temples, the Senate's embassy warned, when it spoke of the people's desperate numbers, in the king's recorded sentence: the thicker the hay, the easier mowed; the second (409) ended in the political theater of Alaric's own puppet emperor — the city prefect Attalus, crowned by Gothic acclamation, who then refused his maker the African expedition that alone could feed Rome, and was uncrowned in a field ceremony as publicly as he had been made; the third followed the final insult (an ambush on the king's column by a rival federate as he rode to a settlement conference under safe-conduct), and on 24 August 410 the Salarian Gate opened — treachery, hunger, or slaves, the traditions divide — and the Goths held Rome for three days. Alaric marched south for Africa — the grain, always the grain — was wrecked by storm at the straits, and died at Cosentia before the year's end; the tradition of the burial under the diverted Busento river, the slaves killed to hide the place, is Jordanes's, graded romance and retained as a later tradition.
Outcome and critical assessment
Result and caution: western control weakened unevenly across regions. The exact year of the famous Rhine crossing is debated, and a frozen-river picture is not established by every source. No single continuous migration arrow can express the movements, subdivisions and changing alliances. The sack's religious interpretation must be separated from its military course.
Historical record: IR-VIII, chapter 4; Orosius, book 7; Procopius, Wars 3.2 for retrospective western background; chronicles identified in the manuscript.