The Russian Revolution impacted the World War I in the following ways:
1) The industrial revolution in Russia led to urbanization which in turn resulted in increase in population that brought with it food shortage and an economic crisis. As a result, the state could not provide adequate funds to the army and hence the unmordenized army lost to the German troops and they seized important Russian regions.
2) Tsar Nicholas II took part in the war and his wife took over the functioning of the government.
3) This led the ruse of discontent among the people of Russia and paved the way for the revolution of 1917.