The foundation and inner part of the inner city wall were built with metal. It can't be helped since it is one of the ten main cities of the empire. The outer part was now built with reinforced brick, and the moment the outer wall fell, the energy barrier of the city must have been activated, and for it to fall means that the highest explosive weapon humans have ever created, the rank 6 explosive ammunition, must have been used.
It must have locked onto the city walls and tore a hole into the city barrier to be able to reach the wall and destroy it. Wallace's face widened.
"Is there any casualty?" he asked.
"Thirty percent of the special forces outside the city died, while the railway itself has been destroyed."
"These skull terrorists," Samantha's eyes turned red as the chair she was sitting on crushed underneath the force gushing out from her body.