Wei Potian didn’t really understand why Song Zining was so anxious.

He knew warfare well enough to tell that those roaming squads were vital to Song Zining’s hold on the mid-field fortress. These units were preventing the dark races from an all-out attack and forcing them to leave soldiers to guard their rear.

The rear guard couldn’t be too big or too small. This posed a problem when there was a limited number of soldiers to invest in the war. Assigning too many to the rear would weaken the assault and increase casualties, while the opposite would allow Song Zining’s focused attacks to devour the supply lines.

As only Song Zining could use divination, the dark races were more or less fighting a miserable blind battle. They could only brace themselves and take Song Zining’s bait.

They would still do some damage to the Empire while attacking fortresses, unlike roaming battles where their casualty ratio was so much higher. Hence, the dark races had no other choice but to attack no matter how high the walls were.

Recalling the roaming...