I think we're using completely different definitions of "rapidly" if you're talking about the Roman empire and I'm talking about nearlight from one side of a co

I think we're using completely different definitions of "rapidly" if you're talking about the Roman empire and I'm talking about nearlight from one side of a continent to another. People organized a nationwide attack on the US Capitol in 2021. It was a tiny fraction of the population that wanted to participate (much less participated), but they organized and came in from everywhere. What would that organization have looked like in Roman times?