Some people act clever. If you talk to them about resisting the Japanese, they'd start whining about how their guns and artillery were inferior, claiming they simply couldn't win. But if you switch the topic to "stabilize the internal before expelling the external," suddenly their drowsiness vanishes.
The commanders of Mirage Country are just about the same: suggest launching a counteroffensive against the Tang forces, and they might hesitate. But if you propose hitting the orcs instead, they honestly might dare to try it.
That night, before 11pm, Mirage troops hidden in trenches charged out under the cover of darkness, launching an attack on the orc forces who had set up camp before nightfall.
Illumination flares lit up the sky, and the Mirage artillery that had gone silent during the day roared back to life. The orc forces, caught off guard, were thrown into chaos.