Battle of Soissons (486)

The territory of the former Western Roman Empire at that time fell under the jurisdiction of Emperor Zeno in Constantinople, but his authority was minimal. The Roman field armies in the West had largely disintegrated, and local warlords and barbarian leaders had become the actual rulers. Zeno lacked adequate resources to impose his authority on them.

From the scarce sources it can be concluded that in the period before, the Roman army in Gaul was led by Aegidius, the father of Syagrius, until his death in 464 or 465. He was supported by the Frankish general Childeric, father of Clovis, who operated as Dux Belgica II north of the Somme, .^[2][3] He also received support from Arbogast, the comes Argentoratensis who defended the Rhine border near Trier.^[4]

After the fall of Emperor Majorianus in 461, a Civil War broke out, in which Aegidius resisted Ricimer who had elevated Libius Severus (461-465) to emperor in Ravenna. This civil war did not end in a victory, but in a fragmentation of the empire into autonomous territories. It is unclear whether Northern Gaul retained this independent position after Aegidius' death, because Paul, an army leader who was active afterwards, and died at Angers around 470, may well have acted again on behalf of the emperor.^[5] Under Anthemius (465-472) who became emperor after Libius Severus, the western emperor seems to have gained more authority again. During this period, Childeric was the most important player in Gaul who operated between the Loire and the Somme in the final phase of his rule. Nevertheless, there were more war leaders which had to be taken into account, Arbogast in Trier, in Cologne rex Sigobert and rex Ragnachar reigned in Camberabia.^[6]

In the final collapse of the Western Roman Empire between 476 and 480, Syagrius was the only remaining representative of Roman rule in the area between the Loire and the Somme. Syagrius was the son of Aegidius,^[7] Roman magister militum per Gallias from 457 to 461; he preserved his father's rump state, the Domain of Soissons, between the Somme and the Loire, calling himself dux.

Shortly after the death of the important Gothic king Euric (484), Clovis saw opportunities to attack the Romans south of the Somme. The bishop of Tours Gregory reports that in the fifth year of Clovis' reign, a war broke out with Syagrius.^[8]

The central location of Soissons in northern Gaul and its largely intact infrastructure allowed a level of stability in the years of the Migration Period, but also made the area tempting for their Frankish neighbours to the north-east. The realm of Syagrius was of almost the same size as the Frankish area, though the Franks were divided into small kingdoms, and, on the right bank of the Rhine, little touched by Roman culture. Nevertheless, Clovis I managed to assemble enough Franks to confront Syagrius's forces.

Clovis issued a challenge to Syagrius naming the time and place of the battle.^[9] Gregory of Tours mentions that one Chararic had brought his forces to the battlefield but then stood aloof, hoping to ally with the winner.^[10][11]

The ensuing battle was a decisive victory for Clovis and his Franks. Syagrius fled to the Visigoths (under Alaric II), but Clovis threatened war and the Visigoths handed Syagrius over for execution. Gregory of Tours further informs us that Clovis sent messengers to Alaric with the ultimatum to deliver Syagrius under penalty of war.^[12] The reality was whole different. Although Clovis had defeated Syagrius and conquered northern Gaul, in the eyes of Alaric, whose hegemony stretched over almost the entire area between the Strait of Gibraltar and the Loire to the Alps in the east, he was a political dwarf. The most likely course of events was that Alaric did not want problems in his border areas during his intervention in Italy against Odoaker in 490, and according to historians is that the most likely reason he delivered Syagrius to Clovis. ^[13] Clovis eventually had Syagrius secretly murdered.

Consequently, the realm of the Franks almost doubled in size; its border was now on the Loire adjacent to the realm of the Visigoths.

The Visigoths were finally routed at the Battle of Vouillé in 507 and forced to retreat south of the Pyrenées.

In due course Clovis marched against Chararic, captured him and his sons, and forced them to accept ordination and tonsures as deacons. On report of their hope to regain power, he had them executed.^[11]

The Battle of Soissons forms the climax of the historical novel by Justin Swanton, Centurion's Daughter. ^[19]

• Franco-Roman War of 486
• Vase of Soissons