23rd Regiment, Missouri Infantry (Union)
- Organized in Missouri at large September, 1861.
- Moved to Macon City, Mo., October 15, 1881, thence to Chillicothe, Mo., November 1.
- Attached to Dept. of Missouri to March, 1862. St. Louis, Mo., Dept. of Missouri, to April, 1862.
- Unattached, 6th Division, Army of the Tennessee, to April, 1862.
- District of St. Louis, Mo., Dept. of Missouri, to June, 1863.
- District of Rolla, Dept. of Missouri, to Decemher, 1863.
- Unattached, District of Nashville, Tenn., Dept. of the Cumberland, to January, 1864.
- 2nd Brigade, Rousseau's Division, 12th Army Corps, Dept. of the Cumberland, to April, 1864.
- Unassigned, 4th Division, 20th Army Corps, Dept. of the Cumberland, to July, 1864.
- 1st Brigade, 3rd Division, 14th Army Corps, to July, 1865.
- 23rd Regiment, Volunteer Missouri Infantry was enrolled between; 3 August 1861 and 12 December 1861.
- They were ordered into service between 16 September 1861 and 25 January 1862.
- The Regiment was discharged between 20 September 1864 and 18 July 1865.
The Colonel in charge was Jacob T. Tindall. 
For more information on the history of this unit, see:
- The Civil War Archive section, 23rd Regiment Infantry, (accessed 25 July 2012).
Companies in this Regiment with the Counties of Origin
Men often enlisted in a company recruited in the counties where they lived though not always. After many battles,companies might be combined because so many men were killed or wounded. However if you are unsure which company your ancestor was in, try the company recruited in his county first.
Company A - Captain James T. Dunlap and Captain Tennessee C. McNabb - Sullivan, Missouri
Company B - Captain Benjamin A. DeBolt and Captain Alexander W. Walker - Trenton, Grundy, Missouri.
Comapny C - Captain James A. Brewer and Captain Jacob A. Trumbo - Chillicothe, Livingston, Missouri.
Company D - Captain John W. Moore and Captain William P. Robinson - Eagle, Harrison, Missouri.
Company E - Captain William M. Delano, Captain Delano Montgomery and Captain William R. Simms - Bethany, Harrison, Missouri.
Company F - Captain Rice Morris - Linn Missouri.
Company G - Captian Warton E. Crandall -Linn, Missouri.
Company H - Captain Fransis Lesko, Captain Nathan Nichols and Capt Ebenzer West -Davies, Missouri.
Company I - Captian Marino Cave, Captain Jeremish Nash and Captain John Parker - Wayne, Missouri.
Company K - Captain Richard H. Brown and Captain Richard G. Waters - Carollton, Carroll, Missouri.
The information about the companies and counties is from Kenneth E. Weant's book, Civil War Records, Missouri Volunteer Infantry, Volume , Three Year Volunteer Regiments 21,23-24, 26-27,29-30 (Arlington, Texas: K.E. Weant, c2011), pages 33-50. FHL 977.8 M2wkv v. 2
- Beginning United States Civil War Research gives steps for finding information about a Civil War soldier or sailor. It covers the major records that should be used. Additional records are described in 'Missouri in the Civil War' and 'United States Civil War, 1861 to 1865' (see below).
- National Park Service, The Civil War Soldiers and Sailors System, is searchable by soldier's name and state. It contains basic facts about soldiers on both sides of the Civil War, a list of regiments, descriptions of significant battles, sources of the information, and suggestions for where to find additional information.
- Missouri in the Civil War describes many Confederate and Union sources, specifically for Missouri, and how to find them. These include compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.
- United States Civil War, 1861 to 1865 describes and explains United States and Confederate States records, rather than state records, and how to find them. These include veterans’ censuses, compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.
- McCarty, Flora (Flora Elaine). Fountain Shelton May : a history of a Civil War soldier. ([S.l.] : F. McCarty, c2011), FHL book 921.73 M451 digitized