Henry Tisdale enlisted as a twenty-five year old Union soldier in the summer of 1862. He served throughout the war but was captured and served as a prisoner of war at Libbey Prison in Richmond and Andersonville Prison in Georgia. He died in 1922. The three page excerpt here deals with Tisdale's encounter with a wounded rebel and his own wound and treatment in a hospital.
Please see all the primary source documents I have for students at:
The Past is a Blast