Why is "August Otto Rühle von Lilienstern" trending?

Wikipedia Overview

August Otto Rühle von Lilienstern, born 1780, died 1847. Prussian officer, joined Scharnhorst's Academy for Officers in the same class as Carl von Clausewitz. Later, they both taught at the Prussian General War School, which would become the Prussian War Academy, and Rühle became Clausewitz' second successor as its director. Rühle published many articles, kept official war diaries, and wrote a two-volume Manual for the Officer for Education in Peace and for Use in Action, published in Berlin in 1817 and 1818. Lilienstern and Clausewitz, teaching at the same school at the time of publication of this manual, were in agreement on many points. For example, they agreed that war was political in nature and that war was a Zweikampf. Clausewitz made these ideas famous in his book On War. Their common views on such issues can be traced to the nature of the military intellectual community in Prussia and the common influence of Gerhard von Scharnhorst.