Battle of Cape Finisterre (1805) - Strategic Background

Strategic Background

The fragile Peace of Amiens of 1802 had come to an end when Napoleon formally annexed the Italian state of Piedmont and on 18 May 1803 Britain was once again at war with France.

Napoleon planned to end the British blockade by invading and conquering Britain. By 1805 his Armée d'Angleterre was 150,000 strong and encamped at Boulogne. If this army could cross the English Channel, victory over the poorly trained and equipped militias was very likely. The plan was that the French navy would escape from the British blockades of Toulon and Brest and threaten to attack the West Indies, thus drawing off the British defence of the Western Approaches. The combined fleets would rendezvous at Martinique and then double back to Europe, land troops in Ireland to raise a rebellion, defeat the weakened British patrols in the Channel, and help transport the Armée d'Angleterre across the Straits of Dover.

Villeneuve sailed from Toulon on 29 March 1805 with eleven ships of the line, six frigates and two brigs. He evaded Admiral Nelson's blockading fleet and passed the Strait of Gibraltar on 8 April. At Cádiz he drove off the British blockading squadron and was joined by six Spanish ships of the line. The combined fleet sailed for the West Indies, reaching Martinique on 12 May.

Nelson was kept in the Mediterranean by westerly winds and did not pass the Strait until 7 May 1805. The British fleet of ten ships reached Antigua on 4 June.

Villeneuve waited at Martinique for Admiral Ganteaume's Brest fleet to join him, but it remained blockaded in port and did not appear. Pleas from French army officers for Villeneuve to attack British colonies went unheeded — except for the recapture of the island fort of Diamond Rock — until 4 June when he set out from Martinique. On 7 June he learned from a captured British merchantman that Nelson had arrived at Antigua, and on 11 June Villeneuve left for Europe, having failed to achieve any of his objectives in the Caribbean.

While in the Antilles, the Franco-Spanish fleet ran into a British convoy worth 5 million Francs escorted by the frigate Barbadoes, 28 guns and sloop Netley. Villeneuve hoisted general chase and two French frigates with the Spanish ship Argonauta, 80 guns captured all the ships but one escort.

On 30 June the combined squadron captured and burned an English 14 gun privateer. On 3 July the fleet recaptured Spanish galleon Matilda, which carried an estimated 15 million Franc treasure, from English privateer Mars, from Liverpool, which was towing Matilda to an English harbour. The privateer was burned and the merchant was taken in tow by the French frigate Sirène.

The fleet sailed back to Europe, and on 9 July the French ship Indomptable lost its main spar in a gale that damaged some other vessels slightly. The Atlantic crossings had been very difficult according to Spanish Admiral Gravina who had crossed the Atlantic eleven times. So with some ships in bad condition, tired crews and scarce victuals, the combined fleet sighted land near Cape Finisterre on 22 July.