At that point, they had to enter a higher-level barracks to undergo Unit Promotion before they could break through their own power ceiling.
In contrast, the Native Creatures of the Lord World didn't have this problem.
They didn't have to worry about such things.
Even if they didn't meet the promotion requirements, they could continue to train in their barracks, constantly honing their Combat Skills and weapon proficiency. This would improve their "hidden soft power" until they became an Elite Unit capable of challenging soldiers of a higher tier.
Back then, Qin Feng's villager army couldn't kill the Ratman Warriors from the Poison Arrow tribe.
That was because his Level 0 regular soldiers were up against several Elite Units from the Level 1 tier, which naturally made them incredibly difficult to kill.
It was worth noting that...
The basic Fire Foxes he had first acquired had terrible combat effectiveness and poor overall Attributes.
