Allied intervention in the Russian Civil War Powers to withdraw from North Russia and Siberia in 1920, though Japanese forces occupied parts of Siberia until 1922 and the northern half of Sakhalin until 1925. In 1917, Russia was in a state of political strife, and public support for World War I and the Tsar was dwindling. The country was on the brink of revolution. The February Revolution changed the course of the war; under intense political pressure, the Tsar abdicated and the Russian Provisional Government was formed, led initially by Georgy Lvov and later by Alexander Kerensky. The Provisional Government pledged to continue fighting the Germans on
National Military Union many skirmishes with both NKVD and Soviet Red Army. Its headquarters were destroyed in early spring of 1946, when Communist secret police arrested hundreds of its members. However, several units remained active until mid-1950s. National Military Union Narodowe Zjednoczenie Wojskowe (National Military Union, NZW) was a Polish anti-Communist organization, founded in November 1944, after collapse of the Warsaw Uprising. It was among the largest and strongest resistance organizations established in the Soviet-controlled Poland in mid- and late 1940s. The NZW consisted mostly of members of destroyed Narodowe Sily Zbrojne and disbanded Armia Krajowa. NZW's first commander was Colonel Tadeusz Danilewicz,