Angel of the Battlefield
Clara Barton was given the nickname of Angel of the Battlefield during the Civil War. She worked on the front lines applying dressings and tending to wounded soldiers.
In the Civil War, a surgeon gave her the nickname "Angel of the Battlefield" because of her immense help.
If this happened- say some major Civil War general = surely it would have been given first-cabin publicity. my guess it did not.
Clara Barton founded the American Red Cross on May 21, 1881
ANSWER It was given during the Civil War, after the Battle of Gettysburg from which it was called.
Clearly two major events were extremely important to Clara Barton. One was her volunteering to aid wounded soldiers from both sides in the US Civil War, and the other was her founding the American Red Cross.
Clara Barton (1821-1912) was the driving force behind the establishment of an American branch of the International Red Cross, which had been founded in Switzerland in 1863 as the "International Committee for Relief to the Wounded." A trained nurse, Barton had worked in the US Patent Office, then volunteered to work in Union field hospitals during the Civil War. She had been placed in charge of hospitals for the Army of the James, and after the war operated the Office of Missing Soldiers. On May 21, 1881, Barton and 14 others established the American Red Cross in Washington, DC. The first local office was at a Lutheran church in Danville, Illinois.
"Since its founding in 1881 by visionary leader Clara Barton, the American Red Cross has been the nation's premier emergency response organization." (http://www.redcross.org/portal/site/en/menuitem.d8aaecf214c576bf971e4cfe43181aa0/?vgnextoid=477859f392ce8110VgnVCM10000030f3870aRCRD&vgnextfmt=default) As the above statement says, Clara Barton was the founder of the American Red Cross.
One of them was the Confederacy.
Rebels
Copperheads
Civil War doctors would've probably given a victim of erysipelas calomel.