An interesting plot premise is killed with poor direction and a lot of overacting with Yellowneck. There's also a distinct lack of characters who you really root for to get out of the Everglades.
Republic released this film in 1955 about five men who are Confederate Army deserters and not some of the greatest specimens of manhood you'll ever want to encounter. Lin McCarthy, Billl Mason, Harold Gordon, and Berry Kroeger are the deserters and from some of the names you know that by the type of roles they've played. Later on they're joined by Stephen Courtleigh, a colonel who deserted the Star And Bars. He's got pretensions, but deep down he's no better than the other four.
For the one and there is only one who makes it there is then the minor problem of crossing 90 miles of ocean to Cuba. Still it is an achievement to have survived the Everglades and all that inhabit it.
If you care to watch you can find out which one survives.