After the Ten Thousand People-level Army Formation is activated, it can maintain its state until the number of personnel falls below five thousand.
The twelve thousand White Flame Army must suffer over seven thousand casualties to lose their peak combat effectiveness.
Casualties of seven thousand are enough to exhaust and kill a peak strong person!
The Grassland does not possess peak combat power; the strongest is the prince-level combat power of Da Man Qilian Guanshi.
Thus, with the White Flame Army stationed at the Eastern Territory, it is enough to deter the Grassland.
After the war in the Eastern Territory began, the White Flame Army frequently took the initiative to attack, restraining most of the Grassland cavalry and strong persons.
This is the reason why the defense line on all sides could still hold despite the lack of strong persons in the Eastern Territory.
