Military history of Spain Portugal and engage French forces on the frontiers while Spanish "guerrilleros" wore down the occupiers. Acting in concert, regular and irregular allied forces prevented Napoleon's marshals from subduing the rebellious Spanish provinces. The Spanish navy, put to sea in support of France during the War of the Third Coalition in 1805, suffered terrible losses at the Battle of Trafalgar, having been weakened by yellow fever in the preceding years; in many ways this marked the nadir of Spanish naval history. The events in mainland Spain had extensive consequences for her empire. Spain's colonies in the Americas had shown an increasing
Order of battle in the Atlantic campaign of 1806 Order of battle in the Atlantic campaign of 1806 The Atlantic campaign of 1806 was one of the most important and complex naval campaigns of the post-Trafalgar Napoleonic Wars. Seeking to take advantage of the withdrawal of British forces from the Atlantic in the aftermath of the Battle of Trafalgar, Emperor Napoleon ordered two battle squadrons to sea from the fleet stationed at Brest, during December 1805. Escaping deep into the Atlantic, these squadrons succeeded in disrupting British convoys, evading pursuit by British battle squadrons and reinforcing the French garrison at Santo Domingo. The period of French success was brief: