I have not found Camp Annie but I did find his card.

2nd Regt. Cav. Vol.
Union

Moore, David S.
Rank - Pvt.
Co. - F
Captain - Hubbard
Enlisted - Feb. 16 1862
Where - Macon Mo.
Mustered in - Oct. 21 1862
Where - Sturgeon, Mo.
Remarks - Discharged Jan. 14, 1863
Camp Annie, Mo. for Disability

Elmer