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Battle of the Allia | |||||||
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Part of the Roman–Gallic wars | |||||||
![]() The Servian Wall according to Titus Livius 6.32 the censors ordered its rebuilding after the sack | |||||||
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Belligerents | |||||||
Roman Republic |
Gauls • Senones • Boii • Insubres | ||||||
Commanders and leaders | |||||||
Quintus Sulpicius Longus | Brennus | ||||||
Strength | |||||||
The estimates are: 15,000,[3] 24,000,[4][5] 35,000,[6] and 40,000[7] | The estimates are: 12,000,[5] more than 40,000,[8] and 30–70,000[3] | ||||||
Casualties and losses | |||||||
Heavy | Light | ||||||
Location within Italy |
The Battle of the Allia was fought c. 387 BC[1][2] between the Senones – a Gallic tribe led by Brennus, who had invaded Northern Italy – and the Roman Republic.
The battle was fought at the confluence of the Tiber River and Allia brook, 11 Roman miles (16 km, 10 mi) north of Rome. The Romans were routed and subsequently Rome was sacked by the Senones.[9] According to scholar Piero Treves, "the absence of any archaeological evidence for a destruction-level of this date suggests that [this] sack of Rome was superficial only."[10]
The date of the battle has been traditionally given as 390 BC in the Varronian chronology, based on an account of the battle by the Roman historian Livy. Plutarch noted that the battle took place "just after the summer solstice when the moon was near the full [...] a little more than three hundred and sixty years from the founding [of Rome]," or shortly after 393 BC.[11][12] The Greek historian Polybius used a Greek dating system to derive the battle as having taken place in 387 BC, which is the most probable.[1][2] Tacitus listed the date as 18 July.[13][2]