Clara Barton achieved renown as “the angel of the battlefield” following her heroic efforts to care for the wounded and dying at Antietam, Fredericksburg, and numerous other battles. In March 1865, President Lincoln appointed her to start what was eventually known as the Bureau of Records of Missing Men—the first instance of a woman heading a United States government bureau. Corresponding with thousands of grieving families whose husbands and sons were still missing at the end of the war, Barton eventually determined the fate of 22,000 soldiers by reviewing casualty lists, parole and prison rolls, and publishing “Roll of Missing Men” lists that were displayed across the country. Her efforts included the identification of bodies interred in unmarked graves at Andersonville prison.