Stock Photo - January 1918. British Royla Naval Cruiser HMS Suffolk in harbour at Vladivostok, Russia. In the wake of the Bolshevik Revolution, the port of Vladivostok in far eastern Russia was of great military importance for the Far Eastern Republic, the Provisional Priamurye Government, and the Allied intervention. The Allied (or 'Siberian') Intervention of 1918û1922 was the dispatch of troops of the Entente powers to the Russian Maritime Provinces as part of a larger effort by the western powers (and Japan) to support White Russian forces against the Bolshevik Red Army during the Russian Civil War.