Edward G. Longacre's “A Regiment of Slaves: The 4th United States Colored Infantry, 1863-1866” (University of Nebraska Press, $19.95) is an interesting book about a regiment mainly recruited from African-Americans living around Baltimore.
Many of the soldiers were free blacks who were educated. One of these, Christian Abraham Fleetwood, reached the highest rank possible for blacks in the Union army during the Civil War and was a winner of the Medal of Honor.
Longacre presents the history of this regiment that saw various kinds of action from digging trenches to actual combat. The book is highly recommended to those interested in what black soldiers did during the Civil War.
— Benet Exton