Battle of Baton Rouge
- When
- 1779
- Where
- Spain and Spanish Louisiana; Fort New Richmond, Baton Rouge; Lower Mississippi River and Lake Pontchartrain
- Episodes
- 4
In September 1779, during the Anglo-Spanish War, Spanish forces under Colonel Bernardo de Gálvez, Governor of Spanish Louisiana, besieged and captured Baton Rouge from the British. The victory cleared the Mississippi River of British forces and secured the lower river for Spain.
Episodes
- Spanish entry into the war and Gálvez's planning
After Spain declared war on Britain in May 1779, Gálvez learned of it in July and began planning an offensive against West Florida.
- British defensive preparations at Baton Rouge
Dickson judged Fort Bute indefensible, concentrated his troops at Baton Rouge, and directed construction of Fort New Richmond from July 1779.
- Aftermath and strategic consequences
The victory cleared the Mississippi of British forces; privateers soon seized British supply ships on Lake Pontchartrain, and Gálvez planned expeditions against Mobile and Pensacola.
- Siege and capture of Baton Rouge
Gálvez arrived before Baton Rouge on September 12, 1779, cut British communications upriver, and besieged the fortified town garrisoned by over 400 regulars and 150 militia.
Background and detail
Background. Spain formally entered the American Revolutionary War on May 8, 1779, when King Charles III declared war. Colonel Bernardo de Gálvez, the colonial Governor of Spanish Louisiana, received word of the declaration on July 21 and immediately began planning offensive operations against West Florida.
British Defenses. Lieutenant Colonel Alexander Dickson had concluded weeks earlier that Fort Bute, built in 1766 and already in ruins, could not be defended, so he stationed most of his troops at Baton Rouge. Beginning in July 1779 he directed construction of Fort New Richmond there.
Aftermath. The victory at Baton Rouge cleared the Mississippi River entirely of British forces and placed the river's lower reaches firmly under Spanish control. Baton Rouge remained in Spanish hands for the rest of the war, and Britain ceded West and East Florida to Spain in the 1783 Treaty of Paris.
People involved
- Bernardo de Gálvez · Spanish colonial Governor of Louisiana and expedition commander
- Alexander Dickson · British Lieutenant Colonel commanding the Baton Rouge garrison
Sources
- Battle of Baton Rouge (1779) Wikipedia, revision of 2026-08-21
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.