Bruno and Svetozar returned to the German encampment that had been made in the mountains for the sake of housing and supplying the 20,000 or so German Soldiers who Bruno had brought with him to the Austrian alps.
Quite frankly, Bruno did not know how much time the German Kaiser and his Austrian counterpart had been planning this joint military exercise, but it must have been months in the making. Either way, he really didn't care, as that was not his responsibility.
Though the Kaiser didn't explicitly explain his reason for sending Bruno to Austria as the leader of his forces. The answer was already obvious to the man. He was here firstly to show off the failures of the Austro-Hungarian Army, and to strengthen the relationship between the German Reich and their southern neighbors.