 Complete the following phrase:  When Napoleons armies threatened Vienna in 1805, the Emperor called Schmitt out of retirement for the specific task of organizing the challenging Austro-Russian retreat. As Chief of the Quartermaster General Staff of the Army, of the Lower Rhine, the Rhine, and the Army of Germany, he had organized a variety of maneuvers and battle plans, frequently hampered by difficult terrain. After Schmitts death, Weyrother, the architect of the Austrian defeat at 