Carl von Clausewitz
Graduating from the "Staff College" was a prerequisite for appointment to the "Prussian General Staff" (later the German General Staff). Carl von Clausewitz enrolled as one of its first students in 1801 (before it was renamed), while other attendees included Field Marshals von Steinmetz, von Moltke, and von Blumenthal in the 1820s and 1830s.