References:
Dyer's Compendium of the War of the Rebellion, 1908 Edition

1st REGIMENT INFANTRY (AFRICAN DESCENT)

Organized at Milliken's Bend, La., and Vicksburg, Miss., May 16, 1863. Attached to African Brigade, District of Northeast Louisiana, to July, 1863. Post of Vicksburg, District of Vicksburg, Miss., till March, 1864.

SERVICE.--Duty at Milliken's Bend, La., till July, 1863. Action at Milliken's Bend June 7, 1863. At Vicksburg, Miss., till March, 1864. Action at Ross' Landing, Grand Lake, February 14, 1864. Designation of Regiment changed to 51st U.S. Colored Troops March 11, 1864, (which see).

2nd REGIMENT INFANTRY (AFRICAN DESCENT)

Organized at Vicksburg, Miss., July 27, 1863. Attached to post of Vicksburg, District of Vicksburg, Miss., to March, 1864.

SERVICE.--Post and garrison duty at Vicksburg, Miss., till March, 1864. Expedition to Trinity November 15-16, 1863 (Detachment). Designation of Regiment changed to 52nd U.S. Colored Troops March 11, 1864, (which see).

3rd REGIMENT INFANTRY (AFRICAN DESCENT)

Organized at Warrenton, Miss., May 19, 1863. Attached to African Brigade, District of Northeast Louisiana, to July, 1863. Post Goodrich Landing, District of Vicksburg, Miss., to January, 1864. 1st Brigade, U.S. Colored Troops, District of Vicksburg, Miss., to March, 1864.

SERVICE.--Duty at Milliken's Bend and Goodrich Landing till March, 1864. Haines' Bluff February 3, 1864. Designation of Regiment changed to 53rd U.S. Colored Troops, March 11, 1864 (which see).

4th REGIMENT INFANTRY (AFRICAN DESCENT)

Organized at Vicksburg, Miss., December 11, 1863. Attached to post and District of Vicksburg, Miss., to March, 1864. Post Goodrich Landing, District of Vicksburg March, 1864.

SERVICE.--Post duty at Vicksburg and at Goodrich Landing, till March, 1864. Skirmish at Columbia February 4, 1864. Designation of Regiment changed to 66th U.S. Colored Troops March 11, 1864 (which see).

5th REGIMENT INFANTRY (AFRICAN DESCENT)

Organization not completed.

6th REGIMENT INFANTRY (AFRICAN DESCENT)

Organized at Natchez, Miss., August 27, 1863. Attached to Post of Natchez, District of Vicksburg, Miss., to January, 1864. Post of Vicksburg, Miss., to March, 1864.

SERVICE.--Post duty at Natchez and Vicksburg, Miss., till March, 1864. Skirmish near Natchez November 11, 1863 (Detachment). Designation of Regiment changed to 58th U.S. Colored Troops March 11, 1864, (which see).