Chisato: "The Sagara army is surrounded! They started fleeing!"
Goemon: "The Hattori generals give chase!"

Note: I was afraid of making a landmark from this battle and raising Hattori's clan fame unnecessarily, so I did not end the battle in the first opportunity. I purposely let go a significant portion of the routing army in the hope that the total casualty falls below the landmark threshold. Unfortunately, a landmark was given anyway. It seems that the first few landmarks require only two full-stack army to clash.