The 11th United States Colored Heavy Artillery mustered out of service October 2, 1865, at New Orleans, Louisiana.
The units of the regiment were originally trained on organized on Dutch Island in Narragansett Bay.
The 1st Battalion assigned to garrison duty at Fort Esperanza, Matagorda Island, Texas, until May 19, 1864.
Action at Indian Village, Plaquemine Parish, on August 6, 1864, in which three soldiers were captured and later executed by insurgent forces.
The de facto commander of the regiment was Lieutenant Colonel Nelson Viall, who was noted for his concern for the well-being of his soldiers.