Eastern Front of the Russian Civil War

The Russian Civil War spread to the east in May 1918, with a series of revolts along the route of the Trans-Siberian Railway, on the part of the Czechoslovak Legion and officers of the Russian Army. Provisional anti-Bolshevik local governments were formed in many parts of Siberia and other eastern regions during that summer. The Red Army mounted a counter-offensive in the autumn of 1918. Throughout the winter and spring of 1918/1919, the White Army had dominance over this front. In the summer of 1919, and from then onwards, the Red Army defeated the White commander Aleksandr Kolchak. The White Army collapsed in the East as well as on other fronts throughout the winter of 1919/1920. Smaller-scale conflicts in the region went on until as late as 1923.

Chronology of Revolts and Offensives
In May 1918, soldiers of the Czechoslovak Legion revolted against the Bolsheviks in Chelyabinsk. The revolt was triggered by Trotsky's order to local Bolshevik commanders to disarm the Czechslovaks (in violation of previous agreements) following a confrontation between the Czechslovaks travelling Eastwards and a train full of Austro-Hungarian former POW's travelling Westwards. The Czechslovak Legion was formed out of Czech and Slovak POWs of the Austro-Hungarian army who volunteered to fight against the empire ruling their homeland. Consequently, The Legion was trying to evacuate to the Western Front to continue the fight against the Central powers, but after the Treaty of Brest-Litovsk in March, the Bolsheviks no longer supported this move. The revolt quickly spread across Siberia, because the Czechoslovaks used the Trans-Siberian Railway to move their troops east quickly and because they were supported by local uprisings instigated by Russian army officers. When the uprising reached Yekaterinburg, the former Tsar and his family who were being held there by the Bolsheviks were executed to prevent their release by the Whites. By the end of August, Vladivostok was in Czechoslovak hands.

On January 24, the Red 4th army captured Uralsk.

Provisional White governments
In the power vacuum left by the departure of the Bolsheviks multiple White Movement governments were established, most importantly KOMUCH at Samara and the Provisional Siberian Government. KOMUCH quickly ordered a general mobilisation, but its troops were small and badly trained. The Czechoslovaks allied with KOMUCH and advanced to the west, taking Kazan, where they captured the tsar's gold reserves which had been moved east for safekeeping.

In Petrograd, Lenin had called upon factory workers to be dispatched to the Eastern Front.