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A massive army of over a million soldiers marching swiftly, encountering unexpected changes, could only maintain strict discipline and unified coordination in a world of mortals.

Although some miscellaneous texts and historical records mention that the number of combatants in mortal dynasties exceeded a million, those were divided and managed separately. Hundreds of thousands of troops were organized into three armies, each with a complete system, from the general down to the lowest ranks, functioning like a colossal killing machine. The commander-in-chief was the brain of this war machine, steering its direction.

If a million heavily armed soldiers were to spread out, they would cover an area of several hundred miles.