behind AotW

Sergeant John Kelt was wounded at Antietam in September 1862 and commissioned a Lieutenant later that year, but was court-martialled and dismissed from the service in mid-1863. He was one of at least two officers of the 21st Massachusetts Infantry cashiered that year (Lt Gibson, the other).

This picture of him is from page 5356, of Volume 104 in the MOLLUS-Massachusetts photograph collection, now at the US Army Heritage and Education Center, Carlisle Barracks, PA.

Here are notes about his August 1863 General Court Martial, from his Compiled Military Service Records, US National Archives, via fold3: