In 1809, he played a pivotal role in the Battle of Basque Roads, leading a fireship attack that trapped most of the French fleet.
However, his commander, Admiral Gambier, failed to capitalize on the victory.
Furious, Cochrane publicly criticized Gambier—a fatal mistake.
Instead of being celebrated, he was sidelined.
By 1814, his outspokenness had made him powerful enemies.
He was falsely implicated in a stock market fraud scandal and dishonorably dismissed from the Royal Navy.
Cochrane accepted an offer from Chile to command their navy during their war of independence against Spain.
He arrived in 1818 to find a tiny, poorly equipped fleet—but his reputation alone galvanized the Chileans.
In 1820, he led a daring assault on the Spanish fortress at Valdivia, using deception to fight 2,000 defenders with only 350 men.
While his men rowed silently into the fortified harbor of Callao, boarded the Spanish flagship Esmeralda, and captured it in the dead of night.