Battle of The Milvian Bridge - Events of The Battle

Events of The Battle

Constantine reached Rome at the end of October 312 approaching along the Via Flaminia. He camped at the location of Malborghetto near Prima Porta, where remains of a Constantinian monument in honour of the occasion are still extant.

It was expected that Maxentius would remain within Rome and endure a siege, as he already had successfully employed this strategy during the invasions of Severus and Galerius. He had already brought large amounts of food to the city in preparation. Surprisingly, he decided otherwise and met Constantine in open battle. Ancient sources about the event attribute this decision either to divine intervention (e.g., Lactantius, Eusebius) or superstition (e.g., Zosimus). They also note that the day of the battle was the same as the day of his accession (28 October), which was generally thought to be a good omen. Lactantius also reports that the populace supported Constantine with acclamations during circus games, although the reliability of his account is not clear.

Maxentius chose to make his stand in front of the Milvian Bridge, a stone bridge that carries the Via Flaminia road across the Tiber River into Rome (the bridge stands today at the same site, somewhat remodelled, named in Italian Ponte Milvio or sometimes Ponte Molle, soft bridge). Holding it was crucial if Maxentius was to keep his rival out of Rome, where the Senate would surely favour whoever held the city. As Maxentius had probably partially destroyed the bridge during his preparations for a siege, he had a wooden or pontoon bridge constructed to get his army across the river. The sources vary as to the nature of the bridge central to the events of the battle. Zosimus mentions it, vaguely, as being a wooden construction while others specify that it was a pontoon bridge; sources are also unclear as to whether the bridge was deliberately constructed as a collapsible trap for Constantine's forces or not.

The next day, the two armies clashed, and Constantine won a decisive victory. The dispositions of Maxentius may have been faulty as his troops seem to have been arrayed with the River Tiber too close to their rear, giving them little space to allow re-grouping in the event of their formations being forced to give ground. Already known as a skillful general, Constantine first launched his cavalry at the cavalry of Maxentius and broke them. Constantine's infantry then advanced, most of Maxentius's troops fought well but they began to be pushed back toward the Tiber; Maxentius decided to retreat and make another stand at Rome itself; but there was only one escape route, via the bridge. Constantine's men inflicted heavy losses on the retreating army. Finally, the temporary bridge set up alongside the Milvian Bridge, over which many of the troops were escaping, collapsed, and those men stranded on the north bank of the Tiber were either taken prisoner or killed. Maxentius' Praetorian Guard seem to have made a stubborn stand on the northern bank of the river. Maxentius was among the dead, having drowned in the river while trying to swim across it in a desperate bid to escape or, alternatively, he is described as having been thrown by his horse into the river. Lactantius describes the death of Maxentius in the following manner: "The bridge in his rear was broken down. At sight of that the battle grew hotter. The hand of the Lord prevailed, and the forces of Maxentius were routed. He fled towards the broken bridge; but the multitude pressing on him, he was driven headlong into the Tiber."