The White movement, also known as the Whites, was one of the main factions of the Russian Civil War of 1917–1922. It was led mainly by the right-wing and conservative officers of the Russian Empire, while the Bolsheviks who led the October Revolution in Russia, also known as the Reds, and their supporters, were regarded as the main enemies of the Whites. It operated as a system of governments and administrations united as the Russian State, which functioned as a military dictatorship throughout most of its existence, and military formations collectively referred to as the White Army, or the White Guard.