These four brothers were sons of Thomas A.R. Nelson a U.S. Congressman and Unionist leader in East Tennessee. Two were Confederate, Two were Union. Could someone with access to Fold 3, or some other source, give me an overview of their service records?

Thanks,
Glenn

Confederate :

Alexander W. Nelson Company B 19th TN Infantry.

Stuart Nelson Company A 60th TN Infantry

Union :
David Nelson 1st Lieutenant F&S (adjutant), 9th TN Cavalry, Captain Company A 10th TN Cavalry

Thomas Nelson Company I 8th TN Cavalry