The Andersonville Trial
Starring Cameron Mitchell, William Shatner, Jack Cassidy, Martin Sheen, Richard Basehart, Woodrow Parfrey, Whit Bissell, Buddy Ebsen, John Anderson, Dick Miller
It's a drama movie, and has a rating of 7.9 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Belgium.