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Movies are never a good source for truth. Sometimes they help you get the idea of what life than was like, but still not near the truth. It is the same with western movies as well, like Gladiator, the Romans used a calvary with saddles. Romans would not have used calvary like that and not in the woods like that and Romans didn't have saddles. They also didn't have chainmail either but Hollywood gave them some, because chainmail looks cool. So, read books and go to class for truth, go to the movies for fun.
Romans actually had saddles and chainmail, but some descriptions in the movie about the Roman army I'm not so sure existed(particularly the exploding vases, which I think only existed by the discovery of Greek Fire, which is after the set time period).
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Just to back up Thaibebop about Gladiator, the Emperor Commodus didn't die in the arena like a gladiator neither, but in his bath !
And from what I remember it's from strangulation too! What a horrible way to die, being strangled in your bath

But then again, ignomiously getting your butt wupped in front of a stadium of people, as depicted in the movie, isn't something to look forward to either.