Siege of Porto Ferrajo

Siege of Porto Ferrajo
Part of the French Revolutionary Wars
An engraving of Porto Ferrajo in the early nineteenth century
Date May – October 1801 Location Porto Ferrajo, Elba, Tuscany 42°49′N 10°19′E / 42.817°N 10.317°E / 42.817; 10.317 Result Anglo-Tuscan victory
Belligerents
Tuscany United Kingdom	France
Commanders and leaders
Carlo de Fisson George Airey	Jean Victor Tharreau François Watrin

The siege of Porto Ferrajo was a French attempt to force the surrender of the Tuscan fortress town of Porto Ferrajo (now Portoferraio) on the island of Elba following the French occupation of mainland Tuscany in 1801 during the French Revolutionary Wars. The Tuscan garrison was heavily outnumbered, but received significant support from British Royal Navy forces who controlled the Mediterranean Sea and ensured that supplies reached the garrison and that French supply convoys were intercepted. The French began the siege with 1,500 men in May 1801, later reinforced to more than 5,000, but could not make an impression on the fortress's defences, instead seeking to starve the defenders into submission with the support of a squadron of French Navy frigates operating off the coast.

The presence of a small British naval squadron in the region rendered this plan impractical and additional British reinforcements under Rear-Admiral Sir John Borlase Warren and Lieutenant Colonel George Airey strengthened the defenders to the point that sallies could be made against French offensive positions. The French subsequently lost all of the frigates sent to blockade the port to patrolling British warships in a series of one-sided engagements, giving the British local dominance that allowed them to maintain the fortress. Despite a number of naval actions and one significant land engagement, the siege dragged on inconclusively for the summer and early autumn of 1801, and when the first articles of the Treaty of Amiens were signed in October, the town was still under Tuscan control, although the provisions of the final agreement, signed in March 1802, granted the island to France.