4th United States Colored Infantry Regiment

Organized at Baltimore, Maryland from July 15 to September 1, 1863, the 4th Regiment was first sent to Fort Monroe, Virginia, on October 1 before moving to Yorktown, Virginia. As part of the XVIII Corps, the unit participated in several expeditions and engagements: an expedition to Mathews County from October 4 to October 9, 1863, Wistar's Expedition against Richmond from February 6 to February 8, 1864, action at New Kent Court House on February 8, an expedition to Bottom's Bridge in aid of Brigadier General Hugh Judson Kilpatrick's cavalry from March 1 to March 4, an expedition into King and Queen County from March 9 to March 12, and an expedition into Mathews and Middlesex Counties from March 17 to March 21.