Early in the Tullahoma Campaign, Union forces in the Army of the Cumberland advanced upon a series of gaps south of Murfreesboro occupied by the Confederate Army of the Tennessee. In a series of attacks and counter-attacks that followed including the 39th Indiana Infantry armed with Spencer repeating rifles, the Confederate forces withdrew to Tullahoma.
West Harpeth River
On December 17, 1864 following the Battle of Nashville, Union cavalry under Gen. James Harrison Wilson pushed the Confederate rear guard out