Perhaps this may helpful..
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Missouri State Archives Soldiers Database

http://www.sos.mo.gov/archives/soldiers/

Missouri Soldiers--1861-1865--War between the States

Shanks, David---Rank Col.

CSA 12th MO Cav.--Enlisted 1861

He returned to Pleasant Hill, raised Co "G" joined Hays. After Hays fell at Newtonia, Shanks was made Major. The Reg. was newly recruited, became known as 6th MO Cav. with David Shanks as Col. Shelby's Brig

Page 123--Obituary Confederate Veterans Magazine March 1914..
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