Theron just stood there, calm and collected. He didn't give any additional input at all.
After he found the escape path out of the tunnel system, he exited near the river far downstream. That was what allowed him to round the two groups from the opposing side. So, he took the opportunity to flood it.
Even if they found the route, so what? The creature had to make it from point A to point B somehow—it only made sense that they had taken some sort of path to do so.
Luckily for Theron, the entire tunnel system was sloped downward, making it all as easy as breathing to handle.
"Let's go. We're retreating," General Pennel finally said.
Everything that had been done here today—all the planning, all the effort—it just felt completely worthless in the end. Other than the fact they had managed to take out the spies, they had gained nothing at all.
