Leon Trotsky (Russian: Лeв Давидович Трóцкий (help·info), Lev Daviovich Trotsky, also transliterated Leo, Lyev, Trotskii, Trotski, Trotskij, Trockij and Trotzky) (November 7 [O.S. October 26] 1879 – August 21, 1940), born Lev Davidovich Bronstein (Лeв Давидович Бронштéйн), was a Ukrainian-born Bolshevik revolutionary and Marxist theorist. He was one of the leaders of the Russian October Revolution, second only to Lenin. During the early days of the Soviet Union, he served first as People's Commissar for Foreign Affairs and later as the founder and commander of the Red Army and the People's Commissar of War. He was also among the first members of the Politburo.