CLAUSEWITZ, klOW-Ze-Vits, KARL VON 11780-1S31). A Prussian general and eminent military writer, born at Burg. He entered the army in 1792, took part in the campaigns on the Rhine in 1793-94, and attended the Berlin Academy for young officers in 1801-03, when he attracted tlw attention and won the fallor of Scha•nhorst. He was adjutant to Prince Augus tus in 1806, was raptured with him by the French at Prenzlau, and. after bring exchanged. served until 1512 as major in the Prussian Gen eral Staff, being employed after 1809 in the Min ist•y of War. under Seharnborst. In 1810.12 hr was also military instructor to the Crown Prince of Prussia, and to Prinee Frederick of the Nether lands. At the outbreak of the Russian War in 1312. he entered the Russian service. and aided Diehitsch in concluding the convention of Tau roggen. Ile accompanied Bilieher as Russian stall' officer during the campaign of 1813. the his
tory of ivhich he wrote, at the instance of Gnei scrmu. Ile reentered the service of Prussia in 18t4, was appointed chief of staff under Thiel mann in the following year, and remained in that position at Cobb•z until 1818, when he was made major-general and director of the `Allgemeine Kric-gssehule.' Finally, he was ap pointed. in 1S31, chief of staff to Field-Mar shal Gneisenau, and served first in Berlin, then on the Polish frontier. His writings are of great. value, and have led to a considerable change in the theory of war. They were published after his death as Ilinterlassene •erke fiber Krieg und Kricyfiihrung (10 vols., 1832-37). of which the most noteworthy are; Fon. Kriegc; Der Feldzug eon 1796 in Italics; Uebersicht des Peldzuges ron 1S13; Der Feidzuy von 1815 ; Ueber das Lebrn und den Charakter von Schurnhorst.