A roster of the 8th Missouri Infantry Regiment in Eathan Allen Pinnell's diary, Serving with Honor, contains the following on Mitchell:

Served in the Missouri State Guard in Coleman's Regiment from Jan. 15-Aug.7, 1862. enlisted as a Private in Company C, 8th Missouri Infantry, at Thomasville, MO, on Aug. 7, 1862. Eyes: blue; Hair: dark; Height: 5' 8"; Age: 23. Deserted, date unkn. Joined Col. Thomas R. Freeman's Missouri Cavalry Regiment by Jan. 26, 1864.

That is the complete record from the book.