After the Russian Revolution of 1917, the railway served as the vital line of communication for the Czechoslovak Legion and the allied armies that landed troops at Vladivostok during the Siberian Intervention of the Russian Civil War. These forces supported the White Russian government of Admiral Alexander Kolchak, based in Omsk, and White Russian soldiers fighting the Bolsheviks on the Ural front. The intervention was weakened, and ultimately defeated, by partisan fighters who blew up bridges and sections of track, particularly in the volatile region between Krasnoyarsk and Chita.