I'am not sure if this is the same guy:

List of names subject to military duty in Rabun County
March 4,1862

237 Thos B Powell
244 Almond Powell

I also found this note online(Google search)
Almond Powell of Rabun County,Georgia
"Almond Powell was killed on Lookout Mt. during the Civil War; in 1862 he went for military duty and his two boys William Edward Powell and James Buchanan Powell were orphaned."