Key Facts
- Date
- 4 September 1285
- French galleys captured
- 15–20
- Genoese galleys that fled
- 10–16
- French prisoners returned
- ~300
- Location
- ~85 km northeast of Barcelona
Strategic Narrative Overview
The engagement took place unusually at night near Les Formigues Islands, suiting Lauria's expertise in nocturnal fighting. He deployed two lanterns per galley to inflate the apparent size of his fleet. The Genoese contingent of ten to sixteen galleys under John de Orreo fled the engagement, abandoning roughly fifteen to twenty French galleys, which were captured, with others sunk or burnt. French admiral Guilhem de Lodeva was taken prisoner.
01 / The Origins
The battle occurred within the broader conflict of the Aragonese Crusade of 1285, when France invaded the Crown of Aragon at papal instigation to dislodge Peter III of Aragon from Sicily. French forces under Philip III advanced into Catalonia, requiring naval support along the coast. Roger of Lauria, admiral of the Catalan-Sicilian fleet, moved to intercept French and allied Genoese galleys providing that logistical lifeline.
03 / The Outcome
The captured French prisoners, said to number around three hundred, were blinded before being sent back to France — all but one, left with a single eye to guide the rest. Lauria sent a defiant message to the King of France asserting Aragonese mastery of the Mediterranean. The defeat weakened French naval support for the land invasion, contributing to the eventual failure of the Aragonese Crusade.
Belligerents & Mobilization Analysis
Side A
2 belligerents
Guilhem de Lodeva, Henry di Mari, John de Orrea.
Side B
1 belligerent
Roger of Lauria.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.