No matter how valiant and formidable the Giant Centipede warriors are, in the barren Earth Core World, their millions can only support an army of a hundred thousand at most.
After the losses in previous battles, the elite remaining now couldn't be many.
"All people are soldiers" only means everyone can go to battle; it doesn't mean everyone is a full-time army.
Even the Alpha Kingdom, which is best at this, has less than three hundred thousand standing army, with more being semi-full-time troops and reserves.
With human race's productivity, what is unachievable, is even more out of reach for the civilization level lower Giant Centipede warriors.
If all the Giant Centipede army were elite, let alone Gutland Province would be unable to hold; perhaps one-fifth of the kingdom's territory would have been taken.
Knowing the enemy's strength is not invincible, yet unable to withstand our army being weaker, hopes can only be pinned on allies.
