When the decision to conquer this place was made by the king, the goblins...quickly prepared for it.
After all, the place where they were at would be the place where they would stand their ground.
It's not like they could just conquer this place in just a single night.
There were hidden monsters and strong monsters that would hinder their path.
That was why the goblins had to establish their foundation right off the bat when they were still not under attack.
Of course, they did that by expanding their territory. Although they only had 50 normal goblins as their workforce, it was enough.
All of the normal goblins were spread out in every direction for as far as they could, and they were teamed up in 5.
One of the goblins would then act as the eyes, and three of the goblins would act as the guard.