Question: When was the King of Prussia died under whom Friedrich Wilhelm Ernst Freiherr von Gaudi served as a Lieutenant General?
Sentence (from "Friedrich Wilhelm von Erdmannsdorff"): Friedrich Wilhelm Freiherr von Erdmannsdorff (18 May 1736 – 9 March 1800) was a German architect and architectural theoretician, and one of the most significant representatives of early German Neoclassicism during the Age of Enlightenment.
Relevant evidence: No