I was uncertain about doing this, other than the title question being clunky, to get this to happen you probably have to change Tsarist Russia to the point where you are overwhelmed by butterflies.
But it might be fun to discuss anyway. What if the Russian steamroller really happened in 1914-5, and the Tsarist Army had the same success as the Red Army in 1944-5? Meaning they are sitting in Berlin and Vienna in 1915?