Before the retreat, the human army wouldn't initially destroy the orbital cannons, thinking that if they had the chance later, they could retake them and use them again.
However, over time, they realized that the Green Skin Orcs had inexplicably mastered the ability to modify human orbital cannons. Then, the few cannons that had been captured by the orcs turned into firepower used to attack the Tianma Fleet from the sky.
That was truly a painful experience.
So far, the number of such incidents hasn't been high; the Tianma Fleet was able to withstand it. The few captured orbital cannons were destroyed in the counter-attacks by the Tianma Fleet, which settled the matter.
But this could not happen too often.
If the majority of the orbital cannons were occupied and utilized by the Green Skins, Steel Wing Star might no longer be a defensive stronghold, and the Tianma Fleet would instead be caught in the middle, getting hit from both sides.
