From Revolutionary Russia, 1891-1991: A History, by Orlando Figes (Metropolitan, 2014), Kindle Loc. 1777-1789:
The story of the Civil War is often told as a conflict in which the Bolsheviks were forced to fight by the Whites and the Allied intervention in Russia. In this left-wing version of events the Reds were not to blame for the ‘extraordinary measures’ they were forced to take in the Civil War—the rule by fiat and terror, the requisitionings, mass conscriptions and so on—because they had to act decisively and quickly to defend their revolution against counter-revolutionaries. But this misses the whole point of the Civil War and its relationship to the revolution for Lenin and his followers.
In their view the Civil War was a necessary phase of the class struggle. They embraced it as a continuation of the revolution in a more intensive and military form. ‘Our Party is for civil war!’ Trotsky told the Soviet on 4 June. ‘Long live civil war! Civil war for the sake of the … workers and the Red Army, civil war in the name of direct and ruthless struggle against counter-revolution.’
Lenin was prepared for a civil war and perhaps even welcomed it as a chance to build his party’s power base. The effects of such a conflict would be predictable: the polarization of the country into ‘revolutionary’ and ‘counter-revolutionary’ sides; the extension of the state’s military and political power; and the use of terror to suppress dissent. In Lenin’s view all these things were necessary for the victory of the Dictatorship of the Proletariat. He often said that the defeat of the Paris Commune was explained by the failure of the Communards to launch a civil war.