Each name appeared in the CWSS index using the same regimental number, same last name and first initial, but Mississippi instead of Alabama. For example Richard B. Harris, Co. E, 21st Mississippi Regt.; William F. Dowd, 24th Mississippi Regt.; J B Dawson, Co. D, 38th Mississippi Regt.

It's one of many anomolies (false readings) which will appear when working strictly with a name match to a service file.