Question: Christopher Bassford is an American military historian, best known for his works on a Prussian military philosopher that died in what year? 
Sentence (from "Carl von Clausewitz"): Carl Philipp Gottfried (or Gottlieb) von Clausewitz ( ; 1 June 1780 – 16 November 1831) was a Prussian general and military theorist who stressed the "moral" (meaning, in modern terms, psychological) and political aspects of war.
Relevant evidence: Yes