Karl Ludwig von Phull

Karl Ludwig von Phull (or Pfuel) (6 November 1757 – 25 April 1826) was a German general in the service of the Kingdom of Prussia and the Russian Empire. Phull served as Chief of the General Staff of King Frederick William III of Prussia in the Battle of Jena-Auerstedt. While in Russian service, he successfully advocated for a scorched earth policy during Napoleon's invasion of Russia.

Phull was born in Ludwigsburg to the Württemberg-line of the Pfuel family of Brandenburg. He was the son of the Swabian general Carl Ludwig Wilhelm August von Phull (1723–1793) and Auguste Wilhelmine von Keßlau (1734–1768).

Phull's first marriage was in Potsdam on 2 May 1790 to Henriette Luise Charlotte von Beguelin (1763–1810), but they divorced in 1800. They had one daughter, Emilie Hernriette (1792–1864). Phull remarried on 18 September 1801 to Charlotte Poths (1766–1808), but this second marriage ended in 1803. Phull and Poths had one son, Eugen (1801–1857). Phull married for a third time in Berlin on 4 October 1810 to Sabine Henriette von Wedel (ca. 1773–1840), but this marriage also ended in separation.

Phull entered the Prussian Army in 1777, serving near King Frederick II and becoming a member of the Prussian General Staff in 1781. Having participated in the Rhine campaign of 1793 in the First Coalition, he was promoted to Oberst in 1798 and Generalmajor in 1805. As the Departementschef of the General Staff since 1804, he was Frederick William III's chief of staff during the Battle of Jena-Auerstedt in 1806.

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