Although long, it is a good film.  The battle scenes are graphic: both bloody and muddy. The folk music is nice, too. Most of the film takes place outdoors, which made filming difficult.  
Afterward, the other DrC asked me why I hadn't wanted to see it for several years.  I replied, "because I believed it to be sad."  She said "So...?" and I replied "I don't like sad films."  It is almost a truism that films about the U.S. Civil War will be sad. 
Verdict:  Yes, it is a sad film, but very well done and worth your time.
 
