Final answer:
Clara Barton aided soldiers in the Civil War by organizing and distributing medical supplies, caring for the wounded, and later founding the American Red Cross.
Step-by-step explanation:
During the Civil War, Clara Barton played a significant role in helping soldiers by organizing and distributing supplies and offering personal support amid battle. Known as the "Angel of the Battlefield," her dedicated work involved providing medical supplies, tending to the wounded, and supporting the Union army's medical efforts. Her leadership and compassion led to the eventual establishment of the American Red Cross, furthering her impact on medical care and humanitarian aid.