C.S. Reeves was also a graduate of the Grafenburg Medical Institute in Dadeville.
From the Dadeville Banner, August 9, 1861:
"Military Notice
Dr. C. S. Reeves is still filling up the ranks of his Cavalry Company with the view to enter the campaign about the first of September next. –A few more will be received to fill out the company. Regular drill every other Saturday at the house of Mr. Reynolds, 5 miles North of Notasulga. Next drill on Saturday 13th instant. – Ladies and gentlemen respectfully invited to attend and witness our performances."

I think J.G. Smith was actually from just across the county line in Coosa County but he seems to have been active in Tallapoosa during the early days of the war.
From Gov. A.B. Moore's Military Correspondence at ADAH:
"Executive Department
Montgomery, Ala April 30th 1861
Mr. Jno. G. Smith is authorized to collect and return to Montgomery all the sabres issued to a Cavalry Company at Dudleyville, Tallapoosa County and to receipt for the same the person or persons having use or possession – and of any person or persons having said sabres or news of the possession the release of them to Mr. Smith is required. Mr. Smith is required to report the news at once of such persons to the government. This order is made on the grounds that the company is disbanded.
A.B. Moore"

I have not been able to find any additional information on Albert G. Holloway's "Bob Jamison Reserves" or John G. Smith's "Tallapoosa Zouaves". Hope this helps.