Organized at Port Hudson, La., September 2, 1863. Attached to Ullman's Brigade, Corps de Afrique, Dept. of the Gulf, to December, 1863. 2nd Brigade, 1st Division, Corps de Afrique, to March, 1864. Garrison, Port Hudson, to April, 1864.
SERVICE.--Garrison duty at Port Hudson, La., until April, 1864. Designation of Regiment changed to 81st United States Colored Troops April 4, 1864.