The four volumes of The Complete Medal of Honor present the full citations of the 3,537 awards granted to 3,517 men (nineteen were double recipients) and one woman between the start of the Civil War in 1861 and the withdrawal of US troops from Afghanistan in 2021. This first volume gives the citations of the 1,522 men and one woman whose courageous exploits during the American Civil War (1861–1865) were deemed worthy of their country’s highest award for bravery.