In the movie GLORY, Matthew Broderick portrayed Robert Gould Shaw, Boston abolitionist and commander of the 54th Massachusetts.
As you see in the list below, from a Phi Gamma fraternity site, TNS was with the 10th Artillery.This unit does not appear to have been at Ft. Wagner.
Jon v. Briesen Forked River NJ
African-American Civil War Memorial and Museum Dedicated in 1996, this monument honors the over 200,000 "US Colored Troops" and their 7,000 white officers. The panels list several Phi Gams: • Orion Bartholomew (DePauw 1859), 15th and 109th Infantry • James Clark Stockton (Washington 1853), 36th Infantry • Charles W. Smith (DePauw 1867), 109th Infantry • Thomas Norwood Sickles (Jefferson 1860), 10th Artillery A museum there details the USCT story; visit the web page. 1000 U St. NW; south side of U St. between Vermont Ave. and 10th. Six blocks east of the unused headquarters lot.