Organized at Vicksburg, Miss., September 26, 1863. Attached to post of Vicksburg, District of Vicksburg, Miss., to March, 1864. Unassigned, 1st Division, U.S. Colored Troops, District of Vicksburg, to April, 1864.

SERVICE.--Post and garrison duty at Vicksburg, Miss., until April, 1864. Designation changed to 4th United States Colored Troops Heavy Artillery, March 11, 1864, and to 5th U.S. Colored Troops Heavy Artillery April 26, 1864.

Organized at Natchez, Miss., September 12, 1863. Attached to post of Natchez, Miss., District of Northeast Louisiana, to January, 1864. Post of Vicksburg, District of Vicksburg, Miss., to March, 1864. District of Natchez, Miss., to April, 1864.

SERVICE.--Garrison duty at Natchez and Vicksburg, Miss., until April, 1864. Skirmish at Vidalia February 7, 1864. Designation changed to 5th United States Colored Troops Heavy Artillery March 11, 1864, and to 6th U.S. Colored Troops Heavy Artillery, April 26, 1864.