I mean the sort of fighting in armor with swords or other weapons that we see depicted in big battles in movies. I'm not talking about strategy or whatever either, I mean more in terms of the pace and duration of the combat.

In movies they make it seem like a dude wearing heavy armor welding a heavy weapon could fight at a frantic pace for a really long time. That seems wildly unrealistic. World class athletes today cannot sustain a fighting pace for more than a few short rounds, with no weapons or armor, and with round breaks. And that's with modern training and nutrition.

So what did the fighting actually look like? Was it like a front line fighting briefly, then dying or moving back to let in fresh fighters? What was the duration of the actual nonstop kinetic fighting? How did it all play out given the reality of human strength and endurance?

Thanks!