Organized April 4, 1864, from 9th Corps de Afrique Infantry. Attached to 2nd Brigade, 1st Division, Corps de Afrique, Dept. of the Gulf, to July, 1864. Consolidated with 88th and 89th United States Colored Troops July 6, 1864, to form new 77th United States Colored Troops. Reorganized July, 1864, by consolidation of 87th and 95th United States Colored Troops. Attached to Engineer Brigade, Dept. of the Gulf, to September, 1864. 2nd Brigade, 2nd Division, United States Colored Troops, Dept. of the Gulf, to February, 1865. Garrison of Port Hudson, La., Dept. of the Gulf, to July, 1865. Dept. of the Gulf to January, 1866.