The earliest I could locate was a Mexican film El Tren fantasma as described here. The General (1926) starring Buster Keaton was known for its action in a train, but I am unable to reliably establish ...
At some point in the movie, two things happen I can recall: They find some phsyco criminal, bust him out of a moving van (he's going to his death sentence), and get him to fight in this cage for ...
Now discounting satires or films that are specifically about fighting... Is the brawl between Nada and Frank in "They Live" the longest non-stop fight in a film? It's clocked at around 5 minutes of ...