He is listed on Andersonville Prison website as follows:
http://www.civilwarprisoners.com/searchresults.php?fname=&am...Name: SAMMIS, NELSON M.
Alternate spelling of last name:
Year born:
Rank: PRIVATE
Company: D
Arm: Infantry
Regiment number: 8th Connecticut Infantry
Date captured: 5/7/1864
Location captured: Wathall Junction, Virginia
Fate:
Enlisted in 10th Tennessee Infantry (CSA). Recaptured by U.S. Troops March 21, 1865. Released from confinement July 8, 1865.
Normally it would say here that he survived the sultana.