Jeanne and Brunhilde had taken Denmark and they both went straight to Norway. They were welcomed by heavy artilleries and big caliber bullets as if they were some kind of monsters that came to destroy the whole nation. They both were too powerful for man-made weapons, and the fact they did that to them only made Brynhilde stronger with her [Oneness] skill.
They killed everyone and destroyed everything that tried to stop them without showing any mercy. It didn't take a while until Norway ran out of both human and weapon resources. They realized how doomed they were and there was nothing that could stop those two from doing whatever they wanted to their country.
Magnus heard about the news and he was devastated, angered, and anxious at the same time. He was glad that he brought the royal family to safety, but his job wasn't done because he had to persuade Odin to let the royal family enter the gate with him.