Quote Originally Posted by moonburn View Post
thats just assuming your gaining ground wich when your facing crazy kelts that put all they´ve got in the charge is highly unlikely for the 1st 15 minutes
If they put everything they had into the charge, I'd say you would make a great deal of progress after the first few minutes .

Quote Originally Posted by Titus Marcellus Scato View Post
Perhaps the rotation occured with tired legionaries at the front holding position, and fresh legionaries advancing past them to become the new front line?
That's certainly possible; although again it probably wasn't a drill-yard manoeuvre. I believe that close-combat, even for articulated infantry, was a lot more messy and fluid than pike & shot battles.