Thomas B. Davidson was an original member of the "Henry Marshall Guards" from DeSoto Parish. He served briefly as 2nd Lieutenant of 2nd Co. "F" from June 20th until August 5th, 1862. Thereafter Davidson appears on rolls dated through August 1864 as a private. The last roll notes that he died of wounds at Atlanta on June 5, 1864. Roll of Honor from the Adjutant General for Aug. 10, 1864, lists him as Acting Sergt. Major.
Complete copies of this man's service file are available here.