The October Revolution of 1917 was a pivotal event in Russian history, and it was led by two key figures: Leon Trotsky and Vladimir Lenin. Trotsky, who had seven letters in his name, was a Marxist revolutionary and theorist, and he was instrumental in the success of the revolution. Lenin, who had five letters in his name, was a Bolshevik leader and a major figure in the Russian Revolution. He was the founder of the Soviet Union and served as its first head of state.