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.
Union City
On March 24, 1864 Confederate cavalry under Nathan Bedford Forrest attacked the garrison at Union City held by the 7th