I agree...it is a very interesting story. I went to Cades Cove just about every year since I was born up until the time when I immigrated to Ireland. I still stop by when I am in the area. I usually take a picture of this tombstone every time I visit, it has become kind of a tradition.
The Unit I am researching was stationed in Greeneville Tennessee during the winter of 1861. They were technically under the command of Col. Danville Leadbetter who was working independantly in East Tennessee trying to repair damage caused by East Tennessee Tories. The unit I am researching was assigned to Leadbetter in order for Leadbetter to use them to guard bridges and such but Leadbetter used them to hunt down the Tories. They operated in the area around Greeneville and also in Cocke County which was full of Union Loyalists. They didn't fight any battle per say. Leadbetter had a few units under his command but I wouldn't really call it a brigade. Still, the Tories were in the process of raising a Regiment but based on everything I have read,it was not a Regiment yet. They finally managed to corner the lead of the Tory Regiment in the woods playing cards. He was so involved in the card game that he didn't even notice that he was being surrounded by Confederates until it was to late. He and the person he was playing cards with were taken back to Greeneville, trialed and hung. After that, Leadbetter's little command was disbanded and they were transferred to Stevenson's Brigade at Cumberland Gap. As far as I have been able to find, there is no historical marker or anything having to do with their little action in East Tennessee.
Richard makes some good recommendations but Cumberland Gap probably has the most to see when it comes to the civil war but it is a good hour and a half to 2 hour drive from the Great Smokey Mountains National Park.
Brigadier-General Danville Leadbetter
Brigadier-General Danville Leadbetter was a native of Maine,
born in 1811; was graduated at the United States military
academy in 1836 as second lieutenant, and was assigned at
first to the artillery and then transferred to the engineer
corps.
He served on garrison duty at Oswego Harbor, NY., 1839-45; was
in charge of the engineer agency in New York for the purchase
and shipment of supplies for the construction of
fortifications, 1845-48; as member of joint commission of
naval and engineer officers for examination of the Pacific
coast of the United States, also as superintending engineer of
the repairs of Fort Morgan, and the building of Fort Gaines, at Mobile, Ala.
The custom house at Mobile was built under his supervision.
Like many other officers of Northern birth his residence as an
army officer among the Southern people had caused him to
become identified with the South in sentiment. He regarded
Alabama as his State, and, upon her secession, determined to
espouse her cause.
Accordingly he resigned his commission as captain in the army
of the United States and, accepting from his adopted State the
commission of lieutenant-colonel, was placed in command of
Fort Morgan. Later he was made a brigadier-general in the
army of the Confederate States (February 27, 1862) and sent
into east Tennessee.
When the Union army was moving upon Chattanooga in 1862,
General Leadbetter was engaged in quite a spirited affair at
Bridgeport, in which, although the Confederates were worsted,
considerable delay was caused to the movements of the enemy.
His skill as an engineer caused him to be sent soon afterward
to superintend the construction of the defenses of Mobile.
In 1863 he was for a short time chief of the engineer
department of the army of Tennessee, and he served in this
capacity during the construction of the lines along Missionary
Ridge, while the army of General Bragg was investing
Chattanooga. A short while before the battle of Missionary
Ridge General Leadbetter accompanied the brigades of Bushrod
Johnson and Gracie on their march to reinforce Longstreet near
Knoxville.
They reached Longstreet on the 24th of November. As
Leadbetter had once been stationed at Knoxville he was
familiar with its fortifications, and for that reason had been
sent to give General Longstreet such help as might be expected
from an experienced engineer.
After three days spent in reconnoitering the position of the
enemy, an attack upon Fort Sanders was decided upon. The
result, however, was disastrous to the Confederates.
General Leadbetter continued to serve the Confederacy
faithfully until the close of the war, when he went to Mexico
and afterward to Canada. He died at Clifton, Canada,
September 26, 1866, at the age of fifty-five.
Source: Confederate Military History, vol. VIII, p. 424