You can find my post on the subject here:
This is not my ancestor, but it was easy to find here:Estes, Ziptchniah; Present Post Office address: Motes, Alabama, born 20 Sep 1836 at Decatur in De Kalb County, Georgia; first entered the service as Private on 28 Sep 1861 at Bowden, Georgia in 2nd Georgia Battery, Company B and continued until Apr 1862, when I was discharged at Brunswick, Georgia. Re-enlisted as Private on 10 May 1862 at Brunswick, Georgia in 56th Georgia Regiment Infantry, Company B and continued until 4 Jul 1863 when I was captured at Vicksburg, Mississippi, was soon exchanged. Re-enlisted as Private in Sep 1863 at Stone Mountain, Georgia in 56th Georgia Infantry, Company B and continued until 1 May 1865 when I was paroled at Augusta, Georgia.Hamrick, George Washington first entered the service as Private on 16 May 1861, continued until Dec 1861, when discharged and re-enlisted as Private on 1 Feb 1862, captured 19 May 1864.Hurley, George W., entered the service as 2nd Lieutenant on 20 Dec 1861, discharged 1 May 1862 because of illness, re-enlisted as Private in Oct 1862.
Millican, Thomas Jefferson, first entered service on 1 Jul 1861, discharged 30 Aug 1862, re-enlisted as private, Feb 1865 discharged because of illness.
Tingle, Francis Marion, first entered the service 20 Sep 1862, 16 May 1863 captured and exchanged. Re-enlisted on 4 Jul 1863 until discharged Nov 1864 [struck by lightning]. Re-enlisted in Dec 1864.
And another here, Michael W. Harvey Auburn, private Apr 1861 discharged 16 Sep 1861, re-enlisted as private Oct 1861 until discharged Aug 1862. Re-enlisted as private Jan 1862.
Robert Yancey Jones Opelika, Fall 1861 had Typhoid fever and discharged. Re-enlisted in Fall of 1861 until the end of the six months for which said troops were enlisted and discharged. Re-enlisted in Spring 1862.
I guess more than one man was eager to defend his country from the invaders.