Expecting attacks from the front and reinforcements from behind, the Artifacts of the Church that were in the airspace of Angaria all waited to grasp victory from within the jaws of their foes.
They had just been informed about how a large portion of the assault-type Artifacts had been hidden, and that they would all fire on the barrier now. With so many weapons bombarding their target at once, it was guaranteed that the barrier would break, and of course, that would be followed by a massacre that would be much, much bloodier than the one they had witnessed before.
Hence, by the time they realized that the trajectories of the attacks from behind were off…it was too late.