On September 6, 1863, after a 59 day siege by the 54th Massachusetts and other Union Regiments, Confederate troops vacated Fort Wagner, SC. The result was a Confederate victory.
"How It Ended
Confederate Victory. While the 54th Massachusetts Infantry and nine other regiments in two brigades successfully scaled the parapet and entered Fort Wagner, they were driven out with heavy casualties and forced to retreat. Unconvinced of the success of frontal assaults, the Federals resorted to land and sea siege operations to reduce the fort over the next two months. After 60 days of shelling and siege, the Confederates abandoned Fort Wagner on September 7, 1863."