I am searching for the burials of the following men who d. of disease at Milliken's Bend, LA

Any help you can give me on this will be greatly appreciated. We are trying to compile an official record of the 23rd WI Infantry. Thank you. Marcia
Thomas E. Halsey
Bailey, Leander J.
Braum, Andrew G.
Brooks, William L.
Bunnell, Albert L.
Crooks, James
Dodge, Artemus E.
Douglas, Dudley M.
Freeman, Edwin R.
Fuller, Alfred E.
Haveland, Nelson
Hayden, Lyman H.
Hays, Jacob
Hill, Joseph A.
Hoke, Charles
Larson, Evan
Nelson, Ole
Williams, John D.
Wilson, Newton D.