Aleksey Nikolayevich Kuropatkin (; March 29, 1848January 16, 1925) served as the Russian Imperial Minister of War from January 1898 to February 1904 and as a field commander subsequently. Historians often hold him responsible for major Russian defeats in the Russo-Japanese War of 1904 to 1905, most notably at the Battle of Mukden (1905) and at the Battle of Liaoyang (August-September 1904).