Perfect counter.

The area of the war barrier was 50 meters in radius, giving the array masters ample space to construct the long-distance array. 

From the view of the Ash Corps on the wall, the war barrier seemed omnipotent as they had no idea how to break it. However, those inside knew it was far from that. 

The main problem Granick knew they would face was the cannons. That was why he gave them the war barrier with the sole ability to nullify energy-based attacks. This meant that physical attacks and people could pass through.

So when they sensed that the high-ranking officers of the Snyder empire were approaching them, the members of the League stepped out of the barrier to make sure the array masters didn't get caught in the fray. 

In a matter of seconds, spells from the approaching generals rained down on the members of the League. Still, instead of retreating into the barrier, they stood their ground with unbothered expressions.