Freeman's Cavalry Regiment was organized in January, 1864, with about 800 officers and men. It served in the Trans-Mississippi Department and was very active confronting the Federals in Arkansas. A Federal expedition, February 12-20, 1864, was organized to pursue this command, which resulted in 8 killed, 1 wounded, and 31 missing. Later the unit was assigned to T.R. Freeman's Brigade and participated in Price's Missouri operations. With Price it lost 13 killed, 20 wounded, and 148 missing and in December totaled about 250 men. It continued the fight in Missouri during 1865 and disbanded in the spring. Company A - Captain Richard H. Powell Company B - Captain A. K. Cook Company C - Captain J. B. Brown Company D - Captain T.Y. Huddleston Company E - Captain J. E. Sexton Company F - Captain Christopher C. Cook Company G - Captain Benjamin F. Austin Company H - Captain William A. Orchard Company I Company K - Captain W. R. Lawson Company L - Captain J. M. Copeland

The Second Missouri Volunteer Cavalry, also known officially as Merrill's Horse, was one of only a handful of Missouri regiments to be officially "named" as well as numbered.The regiment was raised under the authority of Major General John C. Frémont, commander of the Western Department of the U.S. Army, headquartered at St. Louis, Missouri. The regiment was organized by Captain Lewis Merrill, a regular Army officer and a veteran of the prewar U.S. 2nd Dragoons. Serving as a Colonel of Volunteers, Merrill organized companies of volunteers from Missouri and other western states at St. Louis's Benton Barracks. Merrill enforced a level of discipline unusual for volunteer regiments, demanding a level of professionalism comparable to U.S. Regulars.Through most of 1862, Merrill's Horse was assigned the difficult mission of fighting guerrillas and irregular Confederate cavalry in north Missouri. Often operating with Federal Missouri State Militia cavalry, the regiment established a reputation of extreme aggressiveness and effectiveness in the counter-guerrilla mission. Later in the war Merrill's Horse provided distinguished service in more conventional cavalry missions against regular Confederate units. However, in Arkansas, Tennessee, Georgia, and Alabama the regiment was repeatedly called on to return to the difficult specialist counterinsurgency mission of guerrilla fighting.The regiment ended the war guarding the railroad lines between Chattanooga and Atlanta.

During or after the Civil War, no official history was ever written on this Missouri Union Cavalry Regiment. This book hopefully will accomplish this. While the Regimental records now lay at the bottom of the Mississippi River near Greenville, Mississippi when the Steamer B.M. Runyan hit a snag in the river and sank in the summer of 1864, the records have now been reconstructed for the first time along with Rosters. This book is based upon three separate partial histories which were incomplete individually, but have been conveniantly consolidated into a consistant timeline, for the benefit of the men who served in the Regiment as well as future researchers. From early events through the end of the war, the book also gives a brief history of the Civil War in Missouri.

The Missouri 10th Infantry Regiment (also called 12th Regiment) "Steen's Infantry", "Pickett's Infantry", or "Moore's Infantry", was organized on November 10, 1862. Some of its members were raised in the counties of Chariton, Crawford, and Howard. The unit was assigned to A. E. Steen's, Brigadier General Mosby M. Parson's, and S. P. Burns' Brigade, Trans-Mississippi Department. The 10th saw action in Arkansas and Missouri. It lost 11 killed, 41 wounded, and 237 missing at Helena, and after the fight it mustered 236 men. The regiment sustained 34 casualties at Pleasant Hill and 10 at Jenkins' Ferry. During the spring of 1865 it disbanded. The regiment fought at the Battle of Prairie Grove, where both the regiment's colonel and lieutenant colonel were killed and again at the Battle of Helena on July 4, 1863, where it suffered heavy casualties. Beginning in late 1863, the 12th Missouri Infantry Regiment was attached to the regiment; the men of the 12th Missouri Infantry were officially merged into the regiment in late 1864. The regiment fought at the battles of Pleasant Hill and Jenkins' Ferry in April. On June 8, 1865, the men of the regiment were paroled and sent back to Missouri. Companies Company A - Captain George W. McCristy, Captain R.B. Overton. Also called 1st Regiment. Became Company A, 10th Consolidated Regiment, Missouri Infantry. Composed of men from the companies of John W. Priest and John H. Winston's Regiments, Missouri State Guard. Subsequently became Company A, 10th Consolidate Regiment, Missouri Infantry. Company B - Captain John G. Musgrove, Captain Charles H. Burch. Composed of men from the companies of John W. Priest and John H. Winston's Regiments, Missouri State Guard. Subsequently became Company B. Company C - Captain Benjamin Holt, Captain Robert F. Boals. This company was organized from companies of W. O. Coleman's Regiment, Missouri Cavalry. Company D - Captain John W. Lenox, Captain Elias D. Wright - mustered Orgon County, Missouri. This company was organized from companies of W. O. Coleman's Regiment, Missouri Cavalry. Company E - Captain John M. Johnson, Captain Campbell Greenup, Captain Benjamin Holt, Captain Alexander Trammell. This company was organized September 19, 1862 from the regiments of companies consolidated by Colonel Johnston and placed under command of Major A. C. Pickett. Company F - Captain Isaac D. Wilson, Captain A.C. Hancock, Captain John C. McKinney, Captain R.B., Overton. Paroled as Company M, Shaver's (38th) Regiment, Arkansas Infantry. Their names do not show on the roster of the 38th Arkansas, nor are their service records found there. Company G - Captain Moses J. Bradford, Captain James B. McGhee. Parole rolls show Company G. was consolidated with Company K, Tenth Consolidate Regiment, Missouri Infantry. Company H - Captain Jacob A. Love. Company I - Captain D. F. M. Sigler, Captain John McDaniel. Company K - Captain John Still, Captain Henry Brockman - mustered Arkansas. Parole rolls show Company G. was consolidated with Company K, Tenth Consolidated Regiment, Missouri Infantry.

Regimental history of the Confederate 15th Missouri Cavalry whose purpose was to be the first line of Confederate defense along the Missouri-Arkansas border. The unit Participated in Price's Raid of 1864.