It was then sent to campaign against Mobile, Alabama, and its defenses on March 17, 1865, and then took part in the siege of Spanish Fort and Fort Blakely, March 26–April 8. The regiment was one of the lead unit for the assault and capture of Fort Blakely on April 9. Next it marched with the army and captured Mobile on April 12. From there it moved on to Montgomery and had guard duty there until May 10 after the surrender of the Confederacy. The regiment was finally mustered at Gainesville, Alabama, on August 10, 1865, for inspections, and awarding citations. It was on guard duty in Alabama and Mississippi for part of the Reconstruction period until it was finally sent home and disbanded.