He takes his armies, and he crosses the Rubicon River. Now, crossing the Rubicon, I'm gonna write this down. Crossing the Rubicon is now a phrase that we have in our culture that means, you know, you've gone past the point of no return. There's a famous quote ascribed to Julius Caesar once he crossed the Rubicon, as the die has been cast. It's the point of no return. And this was a really big deal, because it was illegal for a governor general, a pro consul, to take their legions outside of territories they governed. And this wasn't just any region.