By the latter part of 1861 and early 1862, Union forces in Missouri had successfully pushed the Confederate Missouri State Guard under Major General Sterling Price out of the state. In response, Brigadier General Samuel R. Curtis determined to pursue the Confederates further into Arkansas with his Army of the Southwest. This campaign reflected the Union's strategic objective to consolidate control of Missouri and extend Federal influence into the Trans-Mississippi region.
The Battle of Pea Ridge, also known as the Battle of Elkhorn Tavern, occurred on March 7–8, 1862, near Leetown, northeast of Fayetteville, Arkansas. Major General Earl Van Dorn launched a Confederate counteroffensive with the strategic goal of recapturing northern Arkansas and Missouri. Confederate forces assembled at Bentonville, forming the most substantial Rebel force by guns and men to gather in the Trans-Mississippi theater. Federal forces under Curtis's command faced this concentrated Confederate offensive. On the first day of battle, Curtis held off the Confederate attack despite being outnumbered. On the second day, Curtis drove Van Dorn's force from the battlefield.
By defeating the Confederates at Pea Ridge, Union forces under Curtis achieved a significant strategic victory. The Union established Federal control over most of Missouri and northern Arkansas, securing these territories against Confederate recapture. This victory consolidated Union dominance in the Trans-Mississippi region and prevented the Confederate counteroffensive from succeeding in its objectives.
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.
Union ~1,384; Confederate ~2,000
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