You will require hard copies of his records as Jim noted, however, they are filled under the surname Parton.

J. K. Partin, Private, Company G, 5th Georgia Reserves, Reference Envelope. Cards filed with Parton, John

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John Parton, Private, Company G, 5th Regiment Georgia Reserves, enlisted May 18, 1864, last recorded present on the August 31, 1864 muster roll where the company was stationed at Camp Cobb near Macon, Georgia, this was the last surviving muster roll for his Company, precluding information on his subsequent service

M266: Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Georgia

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See also:

http://www.google.com/search?client=safari&rls=en&q=5th+Georgia+Reserves&ie=UTF-8&oe=UTF-8