Historical context: This local-history report revisits events of 1780, when Mobile was part of British West Florida rather than the United States.
Long before Alabama became a state, Mobile was caught in the struggle for control of the Gulf Coast during the American Revolution. The turning point came in March 1780, when Spanish forces besieged Fort Charlotte and ended British control of the town.
Mobile under British West Florida
Mobile’s fort had begun as French Fort Condé, but Britain took possession of the region after the French and Indian War and renamed the installation Fort Charlotte. During the Revolution, the fort was a strategic British position in West Florida, guarding a port whose location connected the Mobile River and Mobile Bay to the Gulf of Mexico.
Spain entered the wider war against Great Britain in 1779. Bernardo de Gálvez, the governor of Spanish Louisiana, began a Gulf Coast campaign against British positions after earlier victories along the Mississippi River. Mobile became his next major objective.
A two-week siege
Gálvez departed New Orleans early in 1780 with a fleet and troops. Spanish forces reached Mobile and began their siege of Fort Charlotte in March. The British garrison, led by Capt. Elias Durnford, faced an opponent with a substantial numerical advantage while trying to defend an aging fortification.
Spanish artillery eventually opened breaches in the fort’s walls. On March 14, 1780, Durnford surrendered the garrison after roughly two weeks of siege operations. The surrender brought the western shore of Mobile Bay under Spanish control and established what became known as the Mobile District.
Why the battle mattered
The fall of Fort Charlotte did more than change the flag over Mobile. It removed a British position that could threaten Spanish Louisiana and strengthened Spain’s path toward Pensacola, the remaining major British stronghold in West Florida. Spanish forces captured Pensacola the following year.
Today, the 1780 siege is a reminder that Mobile’s history was shaped by French, British, Spanish and American eras long before modern city boundaries existed. The site of Fort Charlotte remains central to understanding why Mobile’s port and bay made the community strategically important for generations.