I also, have never seen an all out fight while hunting. And I don' t really recall too many times when I seen two bucks together while hunting.

But I did see (I believe on an NRA hunting tape) one scene where two bucks ganged up on another buck. It was the most brutal fight that I ever saw. The two bucks nocked the other buck out. The guy hunting in the stand with his son thought the buck was dead. When the buck woke up, he had a very badly broken leg, but the person in the stand couldn' t get a shot off to finish him off. It was something.