Thorian and his division members, seeing the first division getting pushed back, tried to do something about it by attacking the enemies and their leaders, but that sadly yielded no results. The enemy divisions seem to have prepared lots of temporary defense artifacts just for that scenario alone.
No matter what kind of attacks Thorian and his division members threw at the enemy fortifiers or shock troops, their prepared artifacts defended against them. And the only way to get through this situation is to continuously attack them again, and again, and again. Until their enemy runs out of artifacts. Thorian couldn't imagine the fortune it must have cost them to get that many such defensive tools.
