But the Bolshevik Party knew that these were only the first, not the decisive successes of the Red Army. It was aware that new and far more serious battles were still to come, and that the country could recover the lost food, raw material and fuel regions only by a prolonged and stubborn struggle with the enemy. The Bolsheviks therefore under took intense preparations for a protracted war and decided to place the whole country at the service of the front. The Soviet Government introduced War Communism. It took under its control the middle-sized and small industries, in addition to large-scale industry, so as to accumulate goods for the supply of the army and the agricultural population. It introduced a state monopoly of the grain trade, prohibited private trading in grain and established the surplus-appropriation system, under which all surplus produce in the hands of the peasants was to be registered and acquired by the state at fixed prices, so as to accumulate stores of grain for the provisioning of the army and the workers. Lastly, it introduced universal labour service for all classes. By making physical labour compulsory for the bourgeoisie and thus releasing workers for other duties of greater importance to the front, the Party was giving practical effect to the principle: "He who does not work, neither shall he eat."

All these measures, which were necessitated by the exceptionally difficult conditions of national defense, and bore a temporary character, were in their entirety known as War Communism.

The country prepared itself for a long and exacting civil war, for a war against the foreign and internal enemies of the Soviet power. By the end of 1918 it had to increase the strength of the army threefold, and to accumulate supplies for this army.

— Joseph Stalin (1878-1953)
The History of the Communist Party of the Soviet Union (Bolsheviks) , 1938