Russia was involved in World War l .
Meanwhile , with Russian invovlement in World War One now over , the Allies began the Siberian Intervention , with troops from the U.S. , France , Great Britain , and Japan landing in Vladivostok , where the Czechs had been in charge for some time. < /s > In Vladivostok , however , the Allied rescue of the Czech Legion got sidetracked .
Czechoslovak Legion