The Battle of Wilson's Creek, also known as the Battle of Oak Hills, was the first major battle of the Trans-Mississippi Theater of the American Civil War. It was fought on August 10, 1861, near Springfield, Missouri.
The Battle of Carthage, also known as the Engagement near Carthage, took place at the beginning of the American Civil War on July 5, 1861, near Carthage, Missouri. The experienced Colonel Franz Sigel commanded 1,100 Federal soldiers intent on keeping Missouri within the Union. The Missouri State Guard was commanded by Governor Claiborne F. Jackson himself and numbered over 4,000 soldiers led by a hero of Mexico, Sterling Price, along with 2,000 unarmed troops who did not participate in the battle.
The siege of Lexington, also known as the First Battle of Lexington or the Battle of the Hemp Bales, was a minor conflict of the American Civil War. The siege took place from September 13 to 20, 1861 between the Union Army and the pro-Confederate Missouri State Guard in Lexington, county seat of Lafayette County, Missouri. The victory won by the Missouri Guard bolstered the considerable Southern sentiment in the area, and briefly consolidated Missouri State Guard control of the Missouri River Valley in the western part of the state.
The Battle of Little Blue River was fought on October 21, 1864, as part of Price's Raid during the American Civil War. Major General Sterling Price of the Confederate States Army led an army into Missouri in September 1864 with hopes of challenging Union control of the state. During the early stages of the campaign, Price abandoned his plan to capture St. Louis and later his secondary target of Jefferson City. The Confederates then began moving westwards, brushing aside Major General James G. Blunt's Union force in the Second Battle of Lexington on October 19. Two days later, Blunt left part of his command under the authority of Colonel Thomas Moonlight to hold the crossing of the Little Blue River, while the rest of his force fell back to Independence. On the morning of October 21, Confederate troops attacked Moonlight's line, and parts of Brigadier General John B. Clark Jr.'s brigade forced their way across the river. A series of attacks and counterattacks ensued, neither side gaining a significant advantage.
The First Battle of Boonville was a minor skirmish of the American Civil War, occurring on June 17, 1861, near Boonville in Cooper County, Missouri. Although casualties were extremely light, the battle's strategic impact was far greater than one might assume from its limited nature. The Union victory established what would become an unbroken Federal control of the Missouri River, and helped to thwart efforts to bring Missouri into the Confederacy.
The First Battle of Newtonia was fought on September 30, 1862, between Confederate soldiers commanded by Colonel Douglas H. Cooper and a Union column commanded by Brigadier General Frederick Salomon near Newtonia, Missouri, during the American Civil War. Cooper's force had moved into southwestern Missouri, and encamped near the town of Newtonia. The Confederate column was composed mostly of cavalry led by Colonel Joseph O. Shelby and a brigade of Native Americans. A Union force commanded by Brigadier General James G. Blunt moved to intercept Cooper's force. Blunt's advance force, led by Salomon, reached the vicinity of Newtonia on September 29, and attacked Cooper's position on September 30. A Union probing force commanded by Colonel Edward Lynde was driven out of Newtonia by Cooper's forces on the morning of the 30th.
The Battle of Roan's Tan Yard, also known as the Battle of Silver Creek, was a minor battle fought during the American Civil War on January 8, 1862, in Randolph County, Missouri. After back-and-forth operations throughout 1861, the pro-Confederate Missouri State Guard under the command of Sterling Price had been confined to southwestern Missouri. In December 1861, Price authorized recruiting and raiding activities in the central portion of the state, with the North Missouri Railroad being a major target. In January 1862, Major W. M. G. Torrence of the Union Army located a Missouri State Guard base in Randolph County and attacked it on January 8 with elements of four cavalry regiments. The camp, which was commanded by Colonel John A. Poindexter, put up little resistance and was soon overrun. Large quantities of supplies were captured in the abandoned camp, which was destroyed. The action at Roan's Tan Yard, along with a Missouri State Guard defeat at the Battle of Mount Zion Church the preceding December, led to a decrease in pro-Confederate activity in central Missouri.
The First Battle of Springfield was a battle of the American Civil War that took place on October 25, 1861, near Springfield, Missouri. Following the Battle of Wilson's Creek, the Missouri State Guard, a pro-Confederate militia organization, drove north and defeated a Federal (Union) force in the Siege of Lexington. Following the fighting at Lexington, Federal Major General John C. Frémont began a campaign that drove into southern Missouri. The main body of the Missouri State Guard fell back to Neosho, but a body of roughly 1,000 new recruits commanded by Colonel Julian Frazier was at Springfield. On October 24, Frémont sent a force raised as his bodyguard commanded by Major Charles Zagonyi on a scouting mission towards Springfield. After joining a cavalry force known as the Prairie Scouts at Bolivar, Zagonyi moved on towards Springfield on October 25.
The Missouri State Guard (MSG) was a military force established by the Missouri General Assembly on May 11, 1861. While not a formation of the Confederate States Army, the Missouri State Guard fought alongside Confederate troops and, at various times, served under Confederate officers.
Wilson's Creek National Battlefield, located near Republic, Missouri, preserves the site of the Battle of Wilson's Creek. Fought on August 10, 1861, the battle was the first major American Civil War engagement west of the Mississippi River. In the battle, a Confederate army commanded by Benjamin McCulloch and Sterling Price defeated a smaller Union army commanded by Nathaniel Lyon. However, the Confederates were unable to hold much of Missouri, and a Confederate defeat at the Battle of Pea Ridge effectively solidified Union control of the state. Major features include a five-mile automobile tour loop, the restored 1852 Ray House, and "Bloody Hill", the site of the final stage of the battle. The site is located near Republic in southwestern Missouri just southwest of the city of Springfield. It has been a unit of the National Park Service since 1960, and was listed on the National Register of Historic Places in 1966.
The trans-Mississippi theater of the American Civil War was the scene of the major military operations west of the Mississippi River. The area is often thought of as excluding the states and territories bordering the Pacific Ocean, which formed the Pacific coast theater of the American Civil War (1861–1865).
During the American Civil War, Missouri was a hotly contested border state populated by both Union and Confederate sympathizers. It sent armies, generals, and supplies to both sides, maintained dual governments, and endured a bloody neighbor-against-neighbor intrastate war within the larger national war.
Thomas Caute Reynolds was the Confederate governor of Missouri from 1862 to 1865, succeeding upon the death of Claiborne F. Jackson after serving as lieutenant governor in exile. In 1864 he returned to the state, but was forced back into exile after the Battle of Westport.
James S. Rains was a senior officer of the Missouri State Guard (MSG) who fought in the Trans-Mississippi Theater of the American Civil War. Born in Tennessee, Rains moved to Missouri by 1840, and was a farmer, politician, judge, and militia officer. He also served as an Indian agent from 1845 to 1849, and participated in the California Gold Rush. He was appointed to command of the 8th Division of the MSG in May 1861, and may have commanded all MSG forces at the Battle of Carthage later that year. In August, his men were routed at the Battle of Dug Springs, an incident which became known as "Rains's Scare".
William Yarnel Slack was an American lawyer, politician, and military officer who fought for the Confederate States of America during the American Civil War. Born in Kentucky, Slack moved to Missouri as a child and later entered the legal profession. After serving in the Missouri General Assembly from 1842 to 1843, he fought as a captain in the United States Army for fourteen months during the Mexican–American War, beginning in 1846. He saw action at the Battle of Embudo Pass and the Siege of Pueblo de Taos. Returning to a legal career, Slack became influential in his area.
The 12th Missouri Infantry Regiment was an infantry regiment that served in the Confederate States Army during the American Civil War. After mustering into Confederate service on October 22, 1862, as White's Missouri Infantry, the regiment, as Ponder's Missouri Infantry, fought in the Battle of Prairie Grove on December 7, where it charged the Union lines several times. On May 3, 1863, the regiment was named the 9th Missouri Infantry Regiment, and fought under that name until December 15, 1863, when it was renamed the 12th Missouri Infantry Regiment. On July 4, 1863, the regiment, as part of Brigadier General Mosby M. Parsons' brigade, broke through the Union lines at the Battle of Helena. However, Parsons' flanks were exposed, and the Confederates were driven from the field, suffering heavy losses. After Helena, only 168 men remained in the regiment. On November 22, 1863, the survivors of the regiment were combined into two companies, which were then attached to the 10th Missouri Infantry Regiment, although the 12th Missouri Infantry was still treated as a separate unit for reporting purposes. In April 1864, the 12th Missouri Infantry fought at the battles of Pleasant Hill and Jenkins' Ferry. On September 29, 1864, the survivors of the 12th Missouri Infantry were officially merged into the 10th Missouri Infantry, ending the 12th's separate service career.
Slayback's Missouri Cavalry Regiment was a cavalry regiment of the Confederate States Army during the American Civil War. Originally formed as Slayback's Missouri Cavalry Battalion, the unit consisted of men recruited in Missouri by Lieutenant Colonel Alonzo W. Slayback during Price's Raid in 1864. The battalion's first action was at the Battle of Pilot Knob on September 27; it later participated in actions at Sedalia, Lexington, and the Little Blue River. In October, the unit was used to find an alternate river crossing during the Battle of the Big Blue River. Later that month, Slayback's unit saw action at the battles of Westport, Marmiton River, and Second Newtonia. The battalion was briefly furloughed in Arkansas before rejoining Major General Sterling Price in Texas in December. Probably around February 1865, the battalion reached official regimental strength after more recruits joined.
Hiram Bledsoe's Missouri Battery was an artillery battery that served in the Missouri State Guard and the Confederate States Army during the American Civil War. The battery was formed when the Missouri State Guard was formed as a pro-secession state militia unit in response to the Camp Jackson affair. As part of the Missouri State Guard, the unit was engaged in the Engagement near Carthage and the Battle of Wilson's Creek during mid-1861, before fighting at the Battle of Dry Wood Creek and the Siege of Lexington later that year when Major General Sterling Price led the Guard northwards towards the Missouri River. After the Missouri State Guard retreated into Arkansas in early 1862, Bledsoe's Battery served during the Confederate defeat at the Battle of Pea Ridge in March. The battery, as part of the Army of the West, transferred across the Mississippi River into Tennessee in April, where it left the Guard to enter Confederate service on April 21.
The capture of Sedalia occurred during the American Civil War when a Confederate force captured the Union garrison of Sedalia, Missouri, on October 15, 1864. Confederate Major General Sterling Price, who was a former Governor of Missouri and had commanded the Missouri State Guard in the early days of the war, had launched an invasion into the state of Missouri on August 29. He hoped to distract the Union from more important areas and cause a popular uprising against Union control of the state. Price had to abandon his goal of capturing St. Louis after a bloody repulse at the Battle of Fort Davidson and moved into the pro-Confederate region of Little Dixie in central Missouri.
Missouri (Confederate) 
United States (Union)
