Isaac C. Thomas, Private, Company H, McNeill’s Regiment, Arkansas Infantry,* enlisted July 10, 1862 at Jonesboro by Capt. Byers for the war, deserted December 25,1862, joined Hart’s Regiment,* from desertion August 27, 1863, present with Hogan’s Regiment,* August 31, 1863, died at Camp Sumter February 8, 1864**
[The 30th Arkansas was recorded stationed at Camp Sumter, Ark. at the Jan/Feb, 1864 muster]
Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Arkansas
Note, I cannot locate information on the alternate unit names from his recrods
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Here is an old thread:
http://www.history-sites.com/cgi-bin/bbs62x/arcwmb/webbbs_config.pl?md=read;id=16454
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See also: https://books.google.com/books?id=XRnUa2ZPP00C&pg=PA136&lpg=PA136&dq=Camp+Sumter,+Arkansas&source=bl&ots=p_R24E68xx&sig=1HNWO4JVPo3i6A4eAicpUR_rPxk&hl=en&sa=X&ved=0ahUKEwjLr-avxYbSAhVKw1QKHSAfAEgQ6AEIJzAC#v=onepage&q=Camp%20Sumter%2C%20Arkansas&f=false p. 136
Camp Sumter near Arkadelphia
Camp Sumter near Lewisville, Arkansas
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A FEW WORDS about the term "deserted" from Jeri Helms Fultz:
Many of these soldiers have the word "deserted" after their names.. We would like you to know that this is from the Microfilm from the National Archives. These soldiers may have been separated from their Units in the heat of battle, joined up with other Units and continued to fight this war.. They may have had famillies back home who were starving and no one to plant their crops or gardens... They may have gone home to visit awhile with loved ones and then return, only to find that there were so many miles between them and their original Unit that rejoining them was an impossibility, and so they joined with others to continue to fight in the war.
If you have any questions about the validity of the term "deserted" after your soldiers name, please do send for copies of the original records from the Arkansas History Commission. There is a form that can be downloaded for this purpose...
http://www.couchgenweb.com/civilwar/30th_Ark_inf_Clay.htm