On the web site for this regiment at http://www.geocities.ws/Pentagon/Quarters/5361/thomas_history_documents.html, there is a letter to General Thomas dated Richmond, May 25, 1864 from J. A. Celantz, AAG.

I am researching Thomas and the reorganization of his brigade that was captured at Vicksburg.

Emails sent to the address on the web site are returned undeliverable.

Was Celantz an AAG with the Louisiana Militia?