Organized at St. Louis, Mo. Company "A" mustered in July 10, 1861. Company "B" organized at Paris, Edgar County, Ill., a...

Organized February 17, 1864, by consolidation of Bissell's Engineer Regiment of the West and 25th Regiment Missouri Infantry. Attached t...

Organized as 13th Missouri Infantry June, 1861. Designation changed to 25th Missouri September, 1861. Attached to Dept. of Missouri to March...