2nd Brigade, Hincks' Colored Division, XVIII Corps (April 1864 – June 1864)
2nd Brigade, 3rd Division, XVIII Corps (June 1864 – December 1864)
2nd Brigade, 1st Division, XXV Corps (December 1864 – January 1865)
2nd Brigade, 3rd Division, XXV Corps (January 1865 – March 1865)
2nd Brigade, 3rd Division, X Corps (March 1865 – August 1865)
In December the unit was assigned to the newly formed XXV Corps and took part in the failed attack on Fort Fisher, North Carolina, from December 7 to December 27, 1864, and the successful Second Battle of Fort Fisher from January 7 to January 15, 1865, where the regiment was involved in the assault and capture of the fort. The 4th then participated in several other engagements in the area, Sugar Loaf Hill on January 19, Sugar Loaf Battery on February 11, the Battle of Wilmington at Fort Anderson from February 18 to February 20, and the capture of Wilmington and action at Northeast Ferry on February 22, 1865.
In March 1865, the 4th Regiment was reassigned to the X Corps and took part in General William Tecumseh Sherman's Carolinas Campaign. The unit saw action during the advance on Goldsboro, North Carolina, starting on March 6 and occupied Goldsboro after its capture on March 21. The regiment saw further action at Cox's Bridge on March 23 and March 24 and participated in the advance on Raleigh, North Carolina, starting on April 9 and the occupation of Raleigh after the city's fall on April 14. With the end of the war at hand, the men of the 4th witnessed the surrender of Confederate General Joseph E. Johnston and his army at Bennett Place, North Carolina, on April 26, 1865. The unit served out the rest of its term in the Department of North Carolina.
The 4th was mustered out on May 4, 1866, after about three years of existence. The regiment lost a total of 292 men during its service; three officers and 102 enlisted men were killed or mortally wounded and one officer and 186 enlisted men died of disease.
Members
William H. Appleton (1843–1912), CMOH. Commissioned 2nd Lieutenant of the 4th United States Colored Infantry Regiment, August 3, 1863.
J. Murray Hoag (1843–1917), commissioned 2nd Lieutenant of the 4th United States Colored Infantry Regiment, 1863.