Also, correct me if I'm wrong. William Preston Johnston, was listed as a Major/Lt. Col. of the 3rd Kentucky Mounted Infantry (Soldiers and Sailors System). In the O.R. he is reported wounded, along with the commanding officer Col. Anderson of the 3rd Kentucky, at the Battle of Shilo. (the regiment lost 174 men)
Series 1 - Volume 10 (Part I) page 615 and 620. (Report of Col. Trabue, 4th Kentucky, commanding 1st Kentucky Brigade)
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David Upton