Last Full Measure?
The first film, "Gettysburg" was near perfect in it's script and production. This film as originally released has 3 flaws.
1. It is too "preachy", especially on the Confederate side.
2. The editors deleted all the John Wilkes Booth sceens. *
3. It takes about 45 minutes into the film to introduce the characters from the Union side.
#2 was corrected in the recent "Exctended Cut' on Blu-Ray. The inclusion of the Booths story truly helps the story flow.
I also believe that #1 and #3 would have been made easier to accept if the third novel "Last Full Measure" was filmed as I believe that novel focused more directly on the Union side and introduced US Grant.
Although this film has flaws if you enjoy civil war history you will find yourself forgiving it's flaws and enjoying the sheer quality of the production.