Antoine-Henri Jomini, general and military theorist (Précis de l'art de la guerre, 2 vols., 1838), of Swiss origin, General of the French army, from 1813 in Russian service, founder of the Military Academy in Saint Petersburg.
Marc Charles Gabriel Gleyre (1806–1874), Baron Antoine-Henri Jomini (1779–1869), oil on canvas, 1859; source: Vallière, Paul de: Treue und Ehre: Geschichte der Schweizer in Fremden Diensten, Lausanne n. d. [1940], wikimedia commons, http://commons.wikimedia.org/wiki/File:Gleyre_Antoine_Henri_Jomini.jpg, public domain.