
The 1st Missouri Cavalry Regiment was a cavalry regiment that served in the Confederate States Army during the American Civil War.

The 1st Missouri Field Battery was a field artillery battery that served in the Confederate States Army during the American Civil War. The battery was formed by Captain Westley F. Roberts in Arkansas in September 1862 as Roberts' Missouri Battery and was originally armed with two 12-pounder James rifles and two 6-pounder smoothbore guns. The unit fought in the Battle of Prairie Grove on December 7, as part of a Confederate offensive. Roberts' Battery withdrew after the battle and transferred to Little Rock, Arkansas, where Roberts resigned and was replaced by Lieutenant Samuel T. Ruffner.

The 1st Northeast Missouri Cavalry, or 1st NE Missouri Cavalry was a Confederate Army regiment during the American Civil War. One of the commanders was Colonel Joseph C. Porter, who led 125 men through the Battle of Moore's Mill. This regiment was known for its guerrilla warfare.

The 5th Missouri Infantry Regiment was an infantry regiment that served in the Confederate States Army during the American Civil War. The regiment entered into service on September 1, 1862, when the elements of two preceding battalions were combined. Many of the men entering the regiment had seen service with the secessionist Missouri State Guard. James McCown was the regiment's first colonel. After playing a minor role at the Battle of Iuka on September 19th, the regiment then fought in the Second Battle of Corinth on October 3rd and 4th. After being only lightly engaged on the 3rd, the regiment charged the Union lines on the 4th, capturing a fortification known as Battery Powell. However, Union reinforcements counterattacked and drove the regiment from the field. In early 1863, the regiment was transferred to Grand Gulf, Mississippi, where it built fortifications. The unit spent part of April operating in Louisiana, before again crossing the Mississippi River to return to Grand Gulf.

The 6th Missouri Infantry was an infantry regiment of the Confederate States Army during the American Civil War. The regiment was formed on August 26, 1862, when two existing units were combined. Later that year, the regiment was then lightly engaged at the Battle of Iuka and saw heavy action at the Second Battle of Corinth. In 1863, the regiment was engaged at the Battle of Port Gibson, and was part of a major charge at the Battle of Champion Hill. After a defeat at the Battle of Big Black River Bridge, the regiment took part in the siege of Vicksburg, where it saw heavy fighting. The siege of Vicksburg ended on July 4th with a Confederate surrender; after being exchanged, the regiment combined with the 2nd Missouri Infantry to form the 2nd and 6th Missouri Infantry (Consolidated). The 6th Missouri Infantry ceased to exist as a separate unit.

The 8th Missouri Infantry Regiment was an infantry regiment that served in the Confederate States Army during the American Civil War. The American Civil War began in April 1861 with the Battle of Fort Sumter, and fighting soon escalated. Beginning in May, events in the state of Missouri led to an expansion of the war into that state. In 1862, Confederate recruiting activities took place in Missouri, and a cavalry regiment was formed in Oregon County. On September 2, the unit entered Confederate service, but was soon reclassified as infantry. After many of the unit's men transferred to other units, the regiment was reclassified as a battalion and named the 7th Missouri Infantry Battalion. Under the name Mitchell's Missouri Infantry, the unit was part of a Confederate offensive at the Battle of Prairie Grove on December 7. During the battle, the unit made several charges against the Union lines, but was repeatedly repulsed by artillery fire. The regiment spent most of early 1863 encamped near Little Rock and Pine Bluff in Arkansas, and may have been part of an expedition to the Mississippi River.

Landis's Missouri Battery, also known as Landis's Company, Missouri Light Artillery, was an artillery battery that served in the Confederate States Army during the early stages of the American Civil War. The battery was formed when Captain John C. Landis recruited men from the Missouri State Guard in late 1861 and early 1862. The battery fielded two 12-pounder Napoleon field guns and two 24-pounder howitzers for much of its existence, and had a highest reported numerical strength of 62 men. After initially serving in the Trans-Mississippi Theater, where it may have fought in the Battle of Pea Ridge, the unit was transferred east of the Mississippi River. The battery saw limited action in 1862 at the Battle of Iuka and at the Second Battle of Corinth.

Quantrill's Raiders were the best-known of the pro-Confederate partisan guerrillas who fought in the American Civil War. Their leader was William Quantrill and they included Jesse James and his brother Frank.