For what it's worth, the U. S. Civil War Research Database, which is sourced mainly from the Compiled Service Records, records no Regimental Roster Available, nor a history, for the 21st Battalion Texas Infantry.

The Compiled Service Records available to me on-line has no listing for the 21st Battalion. Granted, they were incorporated into the 21st Regiment. However, records for the 21st Regiment contain no men with the name Braddy, the NPS SSS notwithstanding.

Incidentially, I find frequent disconnects between these three services!

George Martin