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 Siberia. Despite the low speed and low possible weights of trains, the railway fulfilled its promised role as a transit route between Europe and East Asia. In the Russo-Japanese War (1904–1905), the strategic importance of the Trans-Siberian Railway was seen, though its shortcomings contributed to Russia's defeat in the war. The track was a single track and as such could only allow train travel in one direction. This caused significant strategic and supply difficulties for the Russians, as they could not move resources to and from the front as quickly as would be necessary, as a goods train carrying supplies,