my comment
the problem with glory is the film while a work of fiction speaks true on a lot of things. But the most important thing it says is, the union won but it wasn't that the union or the confederacy were heroes. but a few of the seeds in that time will start to modulate the usa into the functional multiracial populace it is today, over three hundred million, more racial variance than any other populace under any other government. As Speilberg suggested using O fortuna [ https://en.wikipedia.org/wiki/O_Fortuna ; https://www.youtube.com/watch?v=nthojvLZoNY&list=RDnthojvLZoNY&start_radio=1 ] about the inevitability of fate. Most well known in film audiences concerning King Arthur which is a call back to a fantasy past. In Glory, O Fortuna , refers to the "glorious" fate of the usa going forward where blacks and non blacks will fight together moreover in the coming years and moreso beyond the time of the war between the states. So even as the 54 mostly fall , what they begin will be something unseen. A time unseen before. [ https://www.youtube.com/watch?v=Fz3sZiVAO0k ; NOTE: charging fort wagner - https://jameshorner-filmmusic.com/glory-an-analysis-of-the-complete-score/ ]