To summarize Clara Barton's courageous acts during the Civil War, the following three details should be included:
- Barton drives her own wagon to army camps to bring much needed supplies and food to soldiers.
- Under enemy fire, she assists doctors treating soldiers and joins in the searches for the wounded.
- To make soldiers more comfortable, she provides bandages to replace corn husks.
These details highlight Barton's bravery, commitment to helping soldiers, and her role in improving their conditions during the war.