"By fall of 1863, Union forces had taken control of Tidewater Virginia and established a toehold in eastern North Carolina, including along the Outer Banks. Thousands of freed slaves and runaways flooded the Union lines, but Confederate irregulars still roamed the region. In December, the newly formed African Brigade, a unit of these former slaves led by General Edward Augustus Wild-a one-armed, impassioned abolitionist-set out from Portsmouth to...