Yes, it is possible to make a case for the Confederacy winning the Civil War, but to endure into this century?  It is not farfetched to say that may be preposterous.  By your logic, the possibility of a German victory could have turned on a few battles which went the opposite way.  You're much too quick to pin labels on those you disagree with.  I can tell you quite a number of us remember Dunkirk, and other battles of WWII and the Korean conflict, through relatives who were present and lived through them.  Movies made about war history help keep more of the population interested and researching, not a bad thing.