Battle of Trafalgar

Setting the scene

By 1805, Napoleon Bonaparte controlled most of Europe and planned to invade Britain, assembling 200,000 troops at Boulogne. But he needed naval superiority to cross the English Channel. The French and Spanish fleets combined had 33 ships of the line, while Britain's Royal Navy, commanded by Admiral Horatio Nelson, had 27 at Trafalgar but superior training and seamanship. British crews could fire three broadsides to the enemy's one due to constant practice. Nelson, who had lost an arm and an eye in previous battles, was Britain's national hero.

What happened

On October 21, 1805, off Cape Trafalgar in southwest Spain, Nelson attacked the combined fleet in two columns, breaking the enemy line—a risky maneuver that exposed his ships to raking fire. His flagship HMS Victory led the northern column. At 11:45 a.m., Nelson hoisted his famous signal: 'England expects that every man will do his duty.' The battle became a melee, with British gunnery devastating the French and Spanish. By 5 p.m., 17 enemy ships were captured and one destroyed, with no British ships lost. But at 1:15 p.m., a French sharpshooter on the Redoutable shot Nelson, who died at 4:30 p.m., knowing he had won.

Why it still matters

Trafalgar ended Napoleon's invasion hopes and established British naval supremacy for 100 years, until World War I. Britain ruled the waves, enabling its empire to expand and protecting it from invasion. The victory confirmed that sea power, not land armies, would determine global dominance. Nelson became a martyr-hero, with Trafalgar Square in London named for the battle and his column erected in 1843. The battle's tactics are still studied at naval academies. It also meant Napoleon turned east, leading to his disastrous 1812 invasion of Russia. Trafalgar ensured Britain would be the world's superpower throughout the 19th century.

Background

Admiral Nelson was killed during the battle.