The Battle of Island Number Ten was an engagement at the New Madrid or Kentucky Bend on the Mississippi River – forming the border between Missouri and Tennessee – during the American Civil War, lasting from February 28 to April 8, 1862. Island Number Ten, a small island at the (Tennessee) base of a tight double turn in the river, was held by the Confederates from the early days of the war. It was an excellent site to impede Union efforts to invade the South by the river, as ships had to approach the island bows on and then slow to make the turns. For the defenders, however, it had an innate weakness in that it depended on a single road for supplies and reinforcements. If an enemy force managed to cut that road, the garrison would be isolated and eventually be forced to surrender.
Union forces began the siege in March 1862, shortly after the Confederate Army abandoned their position at Columbus, Kentucky. The Union Army of the Mississippi under Brigadier General John Pope made the first probes, coming overland through Missouri and occupying the town of Point Pleasant, Missouri, almost directly west of the island and south of New Madrid. Pope's army then moved north and soon brought siege guns to bear on New Madrid. The Confederate commander, Brig. Gen. John P. McCown, decided to evacuate the town after only one day of heavy bombardment, moving most of his troops to Island No. 10, abandoning his heavy artillery and most of his supplies.
Two days after the fall of New Madrid, Union gunboats and mortar rafts sailed downstream to attack Island No. 10. Over the next three weeks, the island's defenders and forces in the nearby supporting batteries were subjected to a steady bombardment by the flotilla, mostly carried out by the mortars. At the same time, the Union forces at New Madrid were digging a canal across the neck of land east of the town to bypass Island No. 10. Several transports were sent to the Army of the Mississippi when the canal was finished, which provided the army with a way to cross the river and attack the Confederate troops on the Tennessee side.
Pope persuaded Flag Officer Andrew Hull Foote to send a gunboat past the batteries, to assist him in crossing the river by keeping off any Southern gunboats and suppressing Confederate artillery fire at the point of attack. The USS Carondelet, under Commander Henry Walke, slipped past the island on the night of April 4, 1862. This was followed by the USS Pittsburg, under Lieutenant Egbert Thompson two nights later. With the support of these two gunboats, Pope was able to move his army across the river and trap the Confederates opposite the island, who by now were trying to retreat. Outnumbered at least three to one, the Confederates realized their situation was hopeless and decided to surrender. At about the same time, the garrison on the island surrendered to Flag Officer Foote and the Union flotilla.
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.
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