The 3rd Wisconsin Cavalry Regiment was a volunteer cavalry regiment that served in the Union Army during the American Civil War. Service The 3rd Wisconsin Cavalry Regiment was organized at Janesville, Wisconsin, from November 30, 1861, to January 31, 1862, and was mustered in on January 28, 1862, under the command of Colonel William Augustus Barstow. The regiment was attached to Solomon's 1st Brigade, Herron's 1st Division, Army of the Frontier, Department of Missouri, to November 1862. Cavalry Command, Herron's Division, Army of the Frontier, to June 1863. District of the Frontier, Department of Missouri, to December 1863. 3rd Brigade, District of the Frontier, to January 1864. Unassigned, District of the Frontier, VII Corps, Department of Arkansas, to April 1864. Unassigned, Little Rock, Arkansas, VII Corps, to September 1864. 4th Brigade, Cavalry Division, VII Corps, to February 1865. Cavalry Brigade, Post of Little Rock, VII Corps, to April 1865. Unassigned, 1st Division, VII Corps, to June 1865. District of South Kansas, to September 1865. All but two companies of the 3rd Wisconsin Cavalry mustered out of service at Fort Leavenworth, Kansas, on September 29, 1865. Company L mustered out on October 23, 1865, and Company L mustered out on October 27, 1865, also at Fort Leavenworth. Detailed service Moved to St. Louis, Mo., March 26–28, 1862, and duty at Benton Barracks, Mo., until May 23. Moved to Fort Leavenworth, Kan., May 23–27. Assigned to frontier and provost duty in Kansas until September 1862. Company D at Atchison; Company G at Shawnee; Company L at Aubrey; Companies B and H at Fort Leavenworth; Companies A, E, and K at Leavenworth City. Companies C, F, I, and M moved to Fort Scott, Kan., June 12–17. Company C stationed at Trading Post until August; Company I at Carthage until August. Action at Monticello August 5. Rocky Bluff August 7. Taberville August 11. Expedition to Montevallo August 14–24. Hickory Grove August 23. Regiment assembled at Fort Scott September. Expedition from Fort Leavenworth to Independence August 12–14, 1862. (Companies I and M at Fort Scott until May 1863; also Companies C and G, December 1862 to July 1863; Company G relieved and ordered to the regiment.) 1st and 3rd Battalions in Blount's Campaign in Missouri and Arkansas against Raines and Parsons September to December 1862. Cross Hollows September 27–28. Newtonia September 30. Occupation of Newtonia October 4. Cane Hill November 28. Battle of Prairie Grove,