Theodore D. Fisher, enrolled December 9, 1861 in the 1st Missouri Infantry which subsequently became the 2nd Regiment Infantry sometime later and which he was serving with at Vicksburg
Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Missouri
On January 16, 1862 the First Missouri Infantry was organized and elected John Q. Burbridge as Colonel. After this regiment organized it was learned that Colonel John S. Bowen had already organized a regiment of Missourians at Memphis, Tennessee, and Bowen's regiment, by seniority, was entitled to be called the First Missouri. Colonel Burbridge's regiment was therefore renamed the Second Missouri Infantry.