Henry R. Luce Professor of the Civil War Era Allen Guelzo was quoted in a May 21 NBC News article about Mary Edwards Walker, the only woman to receive the Medal of Honor.
From NBC News:
She met her greatest challenge at the outbreak of the Civil War. As the republic broke on ideological fault lines, Walker descended on Washington, D.C., and demanded a spot in the Union Army. Her bid for a commission as a medical officer was rejected, but she volunteered anyway, earning a spot as an acting assistant surgeon — the first of her kind in the U.S. Army.
"She was virtually always an unpaid volunteer. She was a civilian contractor. But she was incredibly ambitious," said Dr. Allen Guelzo, the director of the Civil War Era Studies Program at Gettysburg College.