Because they have been unable to eliminate the elite army of the Constant Domain Alliance for a long time, the side of the Eighteen Realms has gradually become agitated, and most importantly, they are running out of food supplies!
When the Eighteen Realms invaded the Northern Territory, they followed the scorched-earth policy of "Kill All, Rob All, Burn All," leaving the Northern Territory in devastation, with not a bit of food left behind. After nearly four months of relentless pursuit, the food supplies for this expedition army have become insufficient.
It isn't a big problem for the troops to eat less and starve for a few days, but the Demon Beast mounts they are equipped with can't endure hunger. Once they are severely starving, they would choose to devour humans to satiate their hunger.
