A combat operation of the Red Army’s Eastern Front (commander Sergey Kamenev, since July 19, Mikhail Frunze, since August 15 Vladimir Olderogge) aimed at complete elimination of Aleksander Kolchak’s Russian Army and liberation of the Urals and Siberia.

The successful counter-offensive of the Red Army’s Eastern Front in April – June 1919, enabled the Reds to go to a general attack against Kolchak’s troops. The Russian Army command planned to use Western and Siberian armies to provide active defense on the border of the Ufa and Kama rivers to stop the enemy’s advance, and to use Orenburg and Ural armies to break through the front and unite with the troops of Anton Denikin. According to the plan of the offensive of Red Army’s Eastern Front, it was to pin down the Cossack armies in the region of Orenburg and Uralsk and liberate the besieged Uralsk, while the main forces were to conduct an offensive: The 5th army – in the direction of Zlatoust and Chelyabinsk, and the 2nd and 3rd armies in cooperation with the Volga military flotilla – in the direction of Perm, Kungur, and Yekaterinburg.

During the first stage of the offensive (June 21 – August 4), hostilities were conducted in the Urals. During the Perm and Yekaterinburg operations, the Reds split the Whites Siberian Army (commander Radola Gajda, since July – Mikhail Diterikhs) into two isolated groups and threw them back beyond the Urals. Within a month of fighting, the troops of the Red Army’s 2nd and 3rd armies liberated Perm, Yekaterinburg, and other large industrial centers. During the Zlatoust operation of 1919, the 5th Army (commander Mikhail Tukhachevsky) made a deep roundabout maneuver, overcame the Ural ridge, and captured Zlatoust. During the Chelyabinsk operation, the 5th Army, supported by the 3rd Army, defeated the Whites Western Army (commander Konstantin Sakharov), which had attempted to encircle and destroy the Soviet troops west of Chelyabinsk. Having liberated Chelyabinsk (July 24) and Troitsk (August 4), the 5th Army troops cut the enemy’s front into two parts. One of them retreated to Siberia, and the other to Turkestan.

During the second stage of the offensive (August 5, 1919 – January 7, 1920), the Reds conducted a series of successive front-line operations in Western Siberia. The last attempt of Kolchak’s Russian Army to stop the enemy’s offensive failed due to the actions of the Red Army’s 3rd and 5th armies during the Petropavlovsk operation (August 20 – November 4). Soviet troops conducted oncoming battles and defensive battles in the area between the rivers Tobol and Ishim, repelled the counter-offensive of the Whites, captured the towns of Petropavlovsk (October 31) and Ishim (November 4). After the defeat, the White troops set on the “Great Siberian Ice March”, the retreat of Kolchak's armed forces to the east at the end of 1919 – the beginning of 1920.

In November 1919 – January 1920, in the course of three successive operations (Omsk, Novonikolaevsk, Krasnoyarsk, the two latter operations were participated in by the Red Siberian partisans led by Aleksander Kravchenko and Pyotr Shchetinkin), the Red Army completed the liberation of Western Siberia. In the battles near Krasnoyarsk, several White divisions were encircled and their personnel killed. Only a small group under the command of Vladimir Kappel managed to break through the encirclement. As Aleksander Kolchak’s armies were defeated, the Reds achieved a decisive victory on the Eastern Front of the Civil War in Russia.