The Minnesota 1st Cavalry Regiment (Mounted Rangers) was organized at St. Cloud, St. Peters and Fort Snelling, Minnesota on October 9 to December 30, 1862. They participated in the following battles: Sibley's Expedition against Indians in Dakota Territory, June 16 to September 14, 1863. Battle of Big Mound, D. T., July 24, 1863. Battle of Dead Buffalo Lake July 26, 1863. Stony Lake July 28, 1863. Operations along the Missouri River July 28 to 30, 1863. It was mustered out from October 20 to December 7, 1863 at Fort Ripley and Fort Snelling, Companies of the Minnesota 1st Cavalry Regiment Company A - Hennepin County, Houston County, Dakota County and Rice County Company B - Nicollet County, Blue Earth County, and Faribault County Company C - Anoka County and other Minnesota counties Company D - Stearns County Company E - Nicollet County, Blue Earth County and Le Sueur County Company F - Fillmore County and other Minnesota counties Company G - Ramsey County, Dakota County and Houston County Company H - Rice County, Freeborn County and Blue Earth County Company I - Olmsted County and Fillmore County Company K - Faribault County and Nicollet County Company L - Brown County Company M - Chisago County, Dodge County, and Mower County Minnesota.