The 4th Missouri Cavalry Regiment, also known as the Fremont Hussars, was a cavalry regiment that served in the Union Army during the American Civil War. Elements of the regiment fought at Pea Ridge, Whitney's Lane, Little Blue River, Byram's Ford, Westport, Marais des Cygnes, Marmiton River, and Mine Creek. Company C served at Iuka and Corinth while Company F was at Raymond, Jackson, Champion Hill, and Vicksburg.

Service

The 4th Missouri Cavalry Regiment was organized in February 1862 and mustered in for three years by consolidation of the Fremont Hussars and three companies of the Hollan Horse. The regiment was mustered in under the command of Colonel George E. Waring, Jr. The regiment was attached to 3rd Brigade, Army of Southwest Missouri, Department of Missouri, to March 1862. Cavalry, 2nd Division, Army of Southwest Missouri, Department of Missouri, to May 1862. Cavalry, 3rd Division, Army of Southwest Missouri, to July 1862. District of Eastern Arkansas, Department of Missouri, to October 1862. Cavalry Brigade, Army of Southeast Missouri, Department of Missouri, until April 1863. District of Columbus, Kentucky, 6th Division, XVI Corps, Department of the Tennessee, to December 1863. Waring's Detached Brigade, District of Columbus, to January 1864. 1st Brigade, 1st Cavalry Division, XVI Corps, to June 1864. 1st Brigade, Cavalry Division, Sturgis' Expedition, June 1864. 1st Brigade, 2nd Cavalry Division, District of West Tennessee, to December 1864. 1st Brigade, Cavalry Division, District of West Tennessee, to June 1865. 2nd Brigade, 2nd Division Cavalry Corps, Military Division West Mississippi, and Department of Texas to November 1865. The 4th Missouri Cavalry mustered out of service on November 13, 1865.

Detailed service

Casualties

The regiment lost a total of 243 men during service; 4 officers and 56 enlisted men killed or mortally wounded, 6 officers and 177 enlisted men died of disease.

Commanders