I wrote this to point out a goof by the makers of the video. In the video, the narrator, Russel Merrit, tells us that D.W. Griffith, in an effort to save money,used the same set, a trench on a battlefield, for both Conferate and Union forces. The presence of a tree branch in the middle background is the same for a Confederate trench as a Union trench. It is inferred that D.W. Griffith had both sides using the same trench. However, the flow of the battle depicted in the movie clearly shows the Union army deployed in the trench, the Conferates storming the trench, and then using it, from the opposite side, as a jumping-off point for an attack on the second line of the Union Army. Otherwise the video is okay.