23rd Infantry Battalion was organized at camp near Murfreesboro, Tennessee, in November, 1862. Its members were raised in Lincoln, Hardin, Bedford, and Franklin counties. The unit contained five companies and served in J.C. Brown's, Brown's and Reynolds' Consolidated, and Palmer's Brigade, Army of Tennessee. In November, 1863, it was consolidated with the 45th Regiment. The battalion fought at Chickamauga and Missionary Ridge, then participated in various conflicts during the Atlanta Campaign. Later it moved back to Tennessee with Hood but was not engaged at Franklin and Nashville. It ended the war in North Carolina. This unit lost twenty-eight percent of the 155 at Chickamauga, and the 45th/23rd Battalion totalled 316 men and 340 arms in December, 1863. It was included in the surrender on April 26, 1865. Major Tazewell W. Newman was in command.