Trans-Siberian Railway men and ammunition coming from west to east would have to wait in the sidings, whilst troops and injured personnel in a troop train travelling from east to west went along the line. Thus the Japanese were quickly able to advance whilst the Russians were awaiting necessary troops and supplies. 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
Trans-Siberian Railway USA and Russia's Pacific ports unmolested. This contrasted with Germany and Britain's behaviour; their navies would destroy or capture neutrals' ships sailing to their respective adversaries. As a result, the Pacific Route – involving crossing the northern Pacific Ocean and the Trans-Siberian Railway – became the safest connection between the USA and the USSR. Accordingly, it accounted for as much freight as the two other routes (North Atlantic–Arctic and Iranian) combined, though cargoes were limited to raw materials and non-military goods (locomotives, clothing, foodstuffs etc.). From 1941–42 the railway also played an important role in relocating Soviet industries from European