AD 486

Battle of Soissons (486)

Clovis defeats Syagrius and seizes his dominion

Nearly the entire surviving battle narrative fits into one short paragraph, written about a century after the fighting.

One paragraph, a century late

According to Gregory of Tours, in the fifth year of Clovis’s reign — conventionally calculated as 486 — Clovis and his relative Ragnachar advanced against Syagrius, who ruled from Soissons, and challenged him to battle.

Syagrius accepted, his army was defeated, and he fled the field for the court of the Visigothic king Alaric II at Toulouse.

The conventional year comes from Gregory’s fifth-regnal-year statement combined with an accession dated to 481; an accession in 481 or 482 yields 486 or 487.

Returned in chains

Gregory says Clovis threatened Alaric with war unless Syagrius was surrendered, and that Alaric delivered him in chains.

After seizing Syagrius’s dominion, Clovis imprisoned him and had him secretly killed.

Gregory supplies no dates for the surrender or the execution, so their interval from the battle is unknown.

What the label promises and the source withholds

“Battle of Soissons” is a conventional name. Gregory says Syagrius ruled at Soissons but does not identify the battlefield more precisely, and no ancient source supplies troop strengths or a casualty total.

The extent of Syagrius’s authority is unknown. Modern maps often draw his realm from the Somme to the Loire, but Ian Wood notes there is no reason to assume it reached beyond Soissons — and he cautions that Gregory’s chronology and providential narrative are secondary evidence where contemporary sources are lacking.

Gregory calls Syagrius “king of the Romans”; “Kingdom of Soissons” is a modern convenience.

Sources

Researched 23 Aug 2026 5 sources not yet audited Traditional date

How this was checked

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Traditional date. Conventionally dated here; the research places it at ~0486.

What the sources leave uncertain

The conventional date 486 is calculated from Gregory's statement that the battle occurred in Clovis's fifth regnal year and an accession dated to 481; an accession in 481/482 yields 486/487.
Gregory wrote about a century later, and Ian Wood cautions that his chronology and providential narrative should be treated as secondary evidence where contemporary sources are lacking.
Gregory says Syagrius ruled at Soissons but does not identify the battlefield more precisely; 'Battle of Soissons' is a conventional label.
The territorial extent of Syagrius's authority is unknown. Ian Wood notes that there is no reason to assume it extended beyond Soissons.