Mary Miller was the daughter of a prominent South Carolina politician and grew up in an atmosphere of public service. She attended private schools in Camden and Charleston. Her husband was a staff officer, an aide to General P.G.T. Beauregard, and commanding general of the South Carolina reserves.
Chesnut accompanied him on his military missions during the Civil War and began recording her views and observations on February 15, 1861, and closed her diary on August 2, 1865. After the war she reworked her manuscript many times in anticipation of publication. But A Diary from Dixie was not published until 1905, long after her death. Although not a day-by-day account, A Diary is regarded highly by historians for its perceptive views of Confederate military and political leaders and for its insight into Southern society during the Civil War. An annotated edition with a biographical essay, Mary Chesnut’s Civil War, ed. by C. Vann Woodward (1981), was awarded the 1982 Pulitzer Prize in U.S. history.