My webpage for the 43rd Tennessee will give you some idea of what East Tennessee troops were up to. See:

http://webpages.charter.net/43tenn

The 3rd Maryland Battery attached to Reynold's brigade was really composed of lots of East Tennessee folk.

Here's what Vaughn's brigade looked like at the Battle of Piedmont in Virginia.

06 05 1864

Vaughn’s brigade had recruited in Unionist-dominated East Tennessee. A mixture of mounted infantry and cavalry regiments comprised the brigade. At Piedmont, Vaughn had the:

1st Tennessee Cavalry

12th Tennessee Cavalry Battalion*

39th Tennessee Mounted Infantry Regiment

43rd Tennessee Mounted Infantry Regiment

59th Tennessee Mounted Infantry Regiment

[63rd Tennessee Infantry - ??, see Lindsey pp. 140]

and detachments of:

16th Georgia Battalion

3rd Tennessee Infantry Regiment

60th Tennessee Infantry Regiment

61st Tennessee Infantry Regiment

62nd Tennessee Infantry Regiment

* About June 1, 1863 the 12th and 16th Battalions Tenn. Calvary were combined now bearing the name of the
First Tennessee Legion

Vaughn’s men had left their horses in Bristol, Tennessee, when the brigade departed for the Shenandoah Valley. For the next month and a half, Vaughn’s Brigade fought as infantry.

They got their horses back July 22 near Winchester after Early's raid on Washington City.

George Martin