"1st Lieut (First Lieutenant) Wm. (William) F. Bragg." Might have been a "Jr." Dress sword presented to him by his Troops in "Potomac Brigade." Only in 1863-64. Think he might have been Cavalry.
It's been said he had a brother on Confederate side. Frederickburg Civil War shopowner said plenty of records for Union but Confederates destoyed their records in fear of retribution.
Anyone with more info I'd love to know more and to see his pension records.