US ResearchConflictsCivil WarSt. Marks River Union Expedition
Civil War

St. Marks River Union Expedition

1865
Florida
Era
Civil War
Year
1865
Location
Florida
Status
Historical record
The Combatants

Who Fought

Forces
Not recorded in historical accounts
VS
Victor
Not recorded in historical accounts
Outcome
Confederate forces successfully prevented the Union detachment of United States Colored Troops from crossing the Natural Bridge on the St. Marks River.
The Battle

History & Significance

The Battle of Natural Bridge occurred on March 6, 1865, during the final year of the American Civil War near what is now Woodville, Florida, south of Tallahassee. Union Brigadier General John Newton had undertaken a joint force expedition to engage and destroy Confederate troops, specifically the Florida Cow Cavalry, that had previously attacked Cedar Keys and Fort Myers and were believed to be encamped near St. Marks. The Union Navy encountered difficulties in getting its ships up the St. Marks River, necessitating the ground engagement at Natural Bridge.

The battle took place at Natural Bridge, a quarter-mile-long stretch where the St. Marks River runs underground after dropping into a sinkhole. Confederate forces, described as a small group of troops and volunteers that included teenagers from the nearby Florida Military and Collegiate Institute (which would later become Florida State University), defended the position from behind breastworks. The Union force consisted of a detachment of United States Colored Troops dispatched by General Newton to cross the Natural Bridge and advance further into Confederate territory.

The Confederate defenders successfully prevented the Union detachment of United States Colored Troops from crossing the Natural Bridge, effectively halting the Union advance at this strategic location. This engagement demonstrated the continued capacity of Confederate forces in Florida to resist Union operations even in the war's final months, and highlighted the role of civilian volunteers and young military cadets in defending key positions. The battle underscored the importance of natural geographic features in Civil War tactics, as the Natural Bridge's unique geology provided a defensible position that small Confederate forces could hold against larger Union forces.

Historical context

The American Civil War (1861–1865) was the deadliest conflict in American history, killing an estimated 620,000 to 750,000 soldiers and an unknown number of civilians. The Confederate States of America, formed by eleven seceding Southern states, faced the Union in four years of warfare across 23 states and territories. Major engagements included First and Second Bull Run, Antietam (the bloodiest single day in American history, September 17, 1862), Chancellorsville, Gettysburg (July 1–3, 1863), Vicksburg (surrendered July 4, 1863), and Sherman's March through Georgia and the Carolinas (1864–1865). President Lincoln issued the Emancipation Proclamation on January 1, 1863, transforming the war's stated purpose to include the abolition of slavery and enabling the enlistment of approximately 180,000 Black men in the United States Colored Troops. Confederate General Robert E. Lee surrendered to Ulysses S. Grant at Appomattox Court House on April 9, 1865. The war resolved the question of secession and ended American slavery, though Reconstruction would face sustained resistance in its attempt to secure civil rights for formerly enslaved people.

Questions & Answers

Frequently Asked Questions

When did St. Marks River Union Expedition take place?
St. Marks River Union Expedition took place in 1865.
Where was St. Marks River Union Expedition fought?
St. Marks River Union Expedition was fought in Florida, United States.
What was the outcome of St. Marks River Union Expedition?
Confederate forces successfully prevented the Union detachment of United States Colored Troops from crossing the Natural Bridge on the St. Marks River.
What was the significance of St. Marks River Union Expedition?
The Battle of Natural Bridge occurred on March 6, 1865, during the final year of the American Civil War near what is now Woodville, Florida, south of Tallahassee. Union Brigadier General John Newton had undertaken a joint force expedition to engage and destroy Confederate troops, specifically the Fl
Protected heritage nearby

Historic Sites near St. Marks River Union Expedition

Bo Lynn's Grocery
Industrial · 1 mi
St. Marks Lighthouse
Industrial · 6.1 mi
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Source

Content adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License.

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