The defensive line was shocked. They had remained here for many years without anything happening. No enemy had been attacking, and they also hadn't attacked. This defensive line was too powerful for a simple Striking Squad to make a difference. These core territories were just way too important, and no one dared to recklessly attack.
Yet, wasn't this what they were doing right now? Usually, the closest Empire gave the permission for a defensive line to attack, and then they would ready themselves for several days. After all, the input of the closest Empire was important.
Why was the input of the closest Empire important? The main reason for that was that the conquered territory would transform into a new defensive line. This meant that the space that the previous defensive line had stayed at would be given to the closest Empire to expand.