Baron Carl "Gustaf" Emil Mannerheim (; 4 June 1867 – 27 January 1951) was a Finnish military leader and statesman. Mannerheim served as the military leader of the Whites in the Finnish Civil War, Regent of Finland (1918–1919), commander-in-chief of Finland's defence forces during World War II, Marshal of Finland, and the sixth President of Finland (1944–1946).