Not a fan
Let me preface this by saying I am a big fan of Errol Flynn (except in this movie), as well as of movies depicting this period of American history. I know a lot of people like this movie but I just can't stand it.
It stretches the truth so unreasonably far that I simply can't suspend my disbelief enough to enjoy it at all.
They might as well have made a movie about General William Tecumseh Sherman running a brothel in Atlanta instead of embarking on his March to the Sea.