Mary,

Here is info from the Indiana Adjutant General report on Charles Smith. See if these fit

Charles Smith
Residence-Madison IN;
Enlisted 9/19/1863 Private and mustered into
7th IN Cav, co M

He w Mustered Out 6/14/1865, Taken to US Sanitary Commission Soldiers Home at Memphis after Sultana explosion ,unknown survival.
The Adjutant Report has been wrong before and this may be one that is.

Charles Smith
Residence- Marion County IN;
Enlisted 9/5/1863 as a Private and Mustered into 7th Indiana Cav,Co I
He deserted 7/2/1865

Mark Davis