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 Mississippi 4th Infantry Regiment was organized at Grenada as the Fourth Regiment, Second Brigade, Army of Mississippi, and enlisted for twelve months. The Fourth was among the troops posted at Fort Henry on the Tennessee River, under General Lloyd Tilghman. The troops were transferred to Fort Donelson and there captured. Following exchange they were then surrendered at Vicksburg and continued throughout the remainder of the war in the Atlanta Campaign, Franklin, and Nashville, ending the war in the defense of Mobile.

The Mississippi 39th Infantry Regiment was organized at Jackson, Mississippi, during the late spring of 1862. About twenty-five percent of this unit was sick in June, and there were 29 officers and 541 men present for duty in July. Company I took part in the fight at Baton Rouge, then, assigned to General Beall's command, the regiment was captured at Port Hudson in July, 1863. After the exchange in December it totalled 220 effectives. Attached to Ross' and Sears' Brigade it was involved in the Atlanta Campaign, Hood's Tennessee operations, and the defense of Mobile. The regiment reported 7 casualties at New Hope Church, 30 at Kennesaw Mountain, 5 at the Chattahoochee River, and 48 in the Battle of Atlanta. Few surrendered with the Department of Alabama, Mississippi, and East Louisiana.

The South Carolina 19th Infantry Regiment was organized during the winter of 1861-1862. It, along with the 18th was created as the last of the units formed in 1861 and did not participate in the early deployment. The 19th was involved the reorganization of the troops in the spring of 1862. They then moved to Mississippi, then to Kentucky where it saw action at Munfordsville. The 19th served with the Army of Tennessee from Murfreesboro to Atlanta, fought with Hood in Tennessee, and was active in the South Carolina Campaign and the North Carolina operations. The regiment lost 8 killed and 72 wounded at Murfreesboro, and the 10th/19th sustained 236 casualties at Chickamauga and totaled 436 men and 293 arms in December, 1863. During the Atlanta Campaign, July 22-28, the 19th reported 12 killed, 60 wounded, and 25 missing, and there were 9 killed, 34 wounded, and 8 missing at Ezra Church. It surrendered on April 26, 1865, with 76 men.