Exchanged and reorganized with 610 effectives, the 1st joined the Army of Tennessee and served in General Quarles' and Shelley's Brigade. It took an active part in the Atlanta and Tennessee Campaigns, and ended the war in North Carolina. Its casualties were high at Peach Tree Creek and were again heavy at Franklin and Nashville. Less than 100 surrendered in April, 1865. One of their companies, Company D, was also known as "Perote Guards".