Baron Carl Gustaf Emil Mannerheim (4 June 1867 – 27 January 1951) was a Finnish military leader and statesman.

He served as the military leader of the Whites in the Finnish Civil War of 1918, as Regent of Finland (1918–1919), as commander-in-chief of Finland's defence forces during the period of World War II (1939–1945), as Marshal of Finland (from 1942), and as the sixth president of Finland (1944–1946).

When Soviet forces attacked Finland in December 1939, he served as commander in chief, and his brilliant leadership won considerable successes against vast numerical superiority, but the end result was defeat, resulting in a relatively harsh peace settlement in 1940.

More Info: en.wikipedia.org