Why did Rome’s greatest general let his defeated enemy walk away free?
In 402, Roman commander Flavius Stilicho crushed Alaric’s Visigoths in two decisive battles. Yet, instead of destroying the threat, Stilicho granted the defeated king safe passage, financial support, and a path to future service. This baffling leniency reveals the complex, high-stakes power games played between the fractured Roman Empire’s competing halves.
The Gothic War of 401–403 began when Alaric, king of the Visigoths, invaded northern Italy. His motivations remain debated, though historians like Thomas Burns suggest he was desperate for provisions after losing his legal status and military rank in the Eastern Roman Empire. Alaric exploited a moment of Roman vulnerability: Stilicho, the Western commander-in-chief, had marched his main army north to defend the borders against Vandals and Alans, leaving the Italian peninsula exposed.
Upon returning to Italy in 402, Stilicho forced Alaric to abandon his siege of the city of Hasta. The two sides clashed at Pollentia on 4 April 402, where Stilicho captured Alaric’s family and a massive hoard of treasure. A second Roman victory followed at Verona. Despite these successes, Stilicho allowed Alaric to withdraw to Illyria with his remaining troops, even providing him with food and funding.
Modern scholars interpret this move as a calculated political maneuver rather than a military failure. Michael Kulikowski argues that destroying Alaric would have been foolish given the 'cold war' between the Western and Eastern Empires; Stilicho viewed Alaric as a potential weapon to be used against Constantinople. Guy Halsall suggests the victory was less total than contemporary poets claimed, and that Alaric’s force was effectively brought into Western service. This strategic ambiguity defined the era, as Alaric spent the following years maneuvering between East and West, threatening both while awaiting his next opportunity.
The war’s most lasting impact was the shift in Roman security. Emperor Honorius, having narrowly escaped the Goths in Milan, moved his residence to the swamp-protected city of Ravenna, which offered superior defenses. While the victory brought temporary relief, the reliance on such volatile alliances highlighted the fragility of the Western Roman Empire as it struggled to contain the constant pressure of migrating tribes.
Source: Gothic War (401–403)
