The German Army was obviously also aware of the large-scale mobilization.
Unlike the indifferent French government, Arthur had long understood that the Germans' appetite would not be satiated by a mere Polish Corridor.
Since he already knew about France's continual concessions, why not take this opportunity to swallow up Poland, which was completely unprepared?
If a level-headed person like Arthur could think this way, not to mention the rulers of Germany and Italy who were already quite mad.
After learning that the Island Nation was expanding its military preparations and had provocatively targeted Australasia in this respect, the Australasian Government quickly concluded that the Island Nation was diverting Australasia's attention, and that Germany was likely to act soon in Europe.
For his own interests, Arthur, of course, chose to fight fire with fire.
The more intense the conflict in Europe, the easier it was for Australasia to reap greater benefits from the war.