The ultimate result of this was that Russia and Germany became enemies in World War I. The Eastern Front saw Germany successful, with victories at Tannenberg, First and Second Masurian Lakes and Lake Naroch. The czarist system collapsed in 1917. The Bolsheviks came to power in the October Revolution. The new regime signed the Treaty of Brest-Litovsk which was highly advantageous to Germany, although it was reversed when Germany surrendered to the Allies in November 1918.