Key Facts
- Date
- 14 June 1808
- French ships captured
- 5 ships of the line and 1 frigate
- French personnel surrendered
- 4,000 seamen
- Engagement duration
- 5 days
- Blockade preceding event
- Since Battle of Trafalgar, 1805
Strategic Narrative Overview
Once Spain declared itself at war with Napoleonic France in June 1808, Spanish shore batteries and naval forces brought pressure to bear on Rosily's trapped squadron in the Bay of Cádiz. The French ships, unable to break out against both Spanish guns and the ongoing British blockade, engaged in a five-day resistance. Lacking any realistic means of escape or relief, the squadron's position was untenable from the outset, and fighting continued until resistance was no longer sustainable.
01 / The Origins
Following Napoleon's intervention in Spain and the Dos de Mayo Uprising of 2 May 1808 in Madrid, Spanish forces turned against their former French allies. A French naval squadron under Admiral François Étienne de Rosily-Mesros had been stranded in the port of Cádiz since the Battle of Trafalgar in 1805, held in place by a British blockade and unable to leave. The political rupture between France and Spain transformed this inactive squadron into an enemy force surrounded in a hostile port.
03 / The Outcome
On 14 June 1808, Admiral Rosily surrendered his entire squadron — five ships of the line and a frigate — along with approximately four thousand sailors. The capitulation handed Spain a significant naval prize at virtually no cost and removed the last substantial French naval presence from Iberian waters. The captured vessels bolstered Spanish and allied naval resources at the start of the Peninsular War, while Rosily and his men became prisoners of war.
Belligerents & Mobilization Analysis
Side A
1 belligerent
François Étienne de Rosily-Mesros.
Side B
1 belligerent
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.