This was Tristan's fourth battle. In his previous battle, he was only fighting for survival and blood. This time, he also fought for the people of the town.
Tristan rode on top of the red stallion, trudging across the defensive lines that the citizens of Caerleon had built up. His main purpose was to raise morale and showing that he was ready for battle in front of his new people. A little narcissistic display could help improve his image among them.
Seeing the four layers of civilians, even with the addition of a wall of town guards among them, the forces of Caerleon town still looked extremely pitiful to the battle-hardened barbarians.