The Tennessee 45th Infantry Regiment was organized at Camp Trousdale, Tennessee, in December, 1861. It participated in the Battle of Shiloh, was active at Baton Rouge, then served in the Jackson area. Later it was assigned to J.C. Brown's, Brown's and Reynolds' Consolidated, and Palmer's Brigade, Army of Tennessee. In November, 1863, it was consolidated with the 23rd Infantry Battalion. The regiment took an active part in the campaigns of the army from Murfreesboro to Atlanta, moving with General Hood back into Tennessee, but it was not engaged at Franklin and Nashville. It ended the war in North Carolina. The unit sustained 112 casualties at Murfreesboro, lost forty-three percent of the 226 at Chickamauga, and reported 12 men disabled at Missionary Ridge. The 45th/23rd Battalion totaled 316 men and 340 arms in December, 1863. Few surrendered in April, 1865.

The 51st Regiment, Tennessee Infantry was organized at Henderson Station, Tennessee, in January, 1862. The 52nd was also organized at the same time with men from Tipton, Fayette, Shelby, Madison, and Jackson counties. A detachment of the 52nd was captured at Fort Donelson, then in October it was active in the fight at Perryville. Later the unit was assigned to D.S. Donelson's, M.J. Wright's, Vaughan's, and Palmer's Brigade. During April, 1862, it was consolidated with the 52nd Regiment and called the 51st Consolidated. However, the consolidation was declared illegal and during April, 1863, it was reorganized as the 51st and 52nd Consolidated Regiment and each unit kept separate records. It participated in many battles of the Army of Tennessee from Murfreesboro to Atlanta, returned to Tennessee with Hood, and was involved in the North Carolina Campaign.

The Tennessee 47th Infantry Regiment was organized December 16, 1861; reorganized May 8, 1862; consolidated with the 12th Infantry Regiment October, 1862; formed part of Company "D", 2nd Consolidated Tennessee Infantry Regiment. The regiment fought throughout the war from Shiloh to Bentonville with the Army of Tennessee. It was paroled at Greensboro, North Carolina May 2, 1865. Companies of the Tennessee 47th Infantry Regiment -Company A enlisted at Troy, Obion County, James White was elected captain. -Company B enlisted at Donaldson's, near Gibson Wells, Gibson County. It consisted of men from Dyer and Gibson County and had William Gay as its captain -Company C enlisted at Dyersburg, Dyer County, Vincent G. Wynne was captain.( later lieutenant colonel) -Company D also enlisted at Dyersburg with William M. Watkins captain (later colonel) Company E enlisted at Dyersburg with George Miller as captain. -Company F enlisted at Humboldt, Gibson County, Jesse Booth was elected captain. -Company G enlisted at Trenton with Thomas Carthel, captain. -Company H enlisted in Kenton, on the Obion, Gibson County line. B. E. Holmes was captain. -Company I was from Troy, W.S. Moore was captain. -Company K enlisted at Yorkville, Gibson County and Green Holmes was captain.

The Tennessee 18th Cavalry Regiment was also called the 19th Regiment. It was organized in May, 1864, by consolidating six companies of Newsom's Tennessee Cavalry Regiment and four companies of Forrest's Alabama Cavalry Regiment, The unit was assigned to T.H. Bell's Brigade in the Department of Alabama, Mississippi, and East Louisiana. Its members were recruited in Hardeman, Madison, Henderson, and McNairy counties.