The significance of the Russian Civil War following the October Revolution (1917) lies in its establishment of the Soviet regime and the solidification of Bolshevik power. The war, fought between the Red Army (Bolsheviks) and various anti-Bolshevik forces (Whites), lasted from 1917 to 1922. This conflict shaped the future of Russia, with the Bolsheviks' victory ensuring the establishment of a one-party socialist state. The civil war led to extensive violence and millions of deaths, transforming Russian society and economy. Moreover, the war's outcome influenced international socialist movements and set the stage for the Cold War dynamics, impacting global geopolitics throughout the 20th century.