Five people arrived at the scene riding on horses around 5 minutes after Auron's group left the scene.
The leader of these five people looked at the burned supplies and gnashed his teeth. With one glance, the leader knew that the supply delivery group had been ambushed. He looked at the trail and saw that the people were gathered inside the forest to their left.
This means that the enemies were coming from the left, and it was apparent that they would leave using the same path.
These 5 people were elite soldiers from the Regalia side. The stop area commander already knew there was a high chance for the Gaia to attack the supply delivery group. Hence, the commander assigned several elite soldiers as reinforcements.
The 5 elite soldiers who fought with Auron's group previously were the first reinforcements. The commander also arranged several checkpoints and stationed elite soldiers there.