Who was the famous nurse during the American Civil War?

Clara Barton and Dorthea Dix were but two of the many nurses that worked to alleviate the sufferings of wounded soldiers during the US Civil War.
Barton is credited as being the founder of the American Red Cross, and Dix served as Superintendent of nurses during the war. Both were Union ladies but neither is said to have played favorites among those in need of their aid.
Another famous nurse was Mary "Mother" Byckerdyke. She also was a Union lady.