"Early in 1918, for the Allied forces, it looked dark. The Germans were
able to neglect the crumbled-in Eastern Front and concentrate a tornado
drive on the Western Front. It was at last realized that the controlling
Bolshevik faction in Russia was bent on preventing the resumption of the
war on the Eastern Front and possibly might play its feeble remnants of
military forces on the side of the Germans. The Allied Supreme Council
at Versailles decided that the other allies must go to the aid of their
old ally Russia who had done such great service in the earlier years of
the war. On the Russian war front Germany must be made again to feel
pressure of arms. Organization of that front would have to be made by
efforts of the Allied Supreme War Council."
The History of the American Expedition Fighting the Bolsheviki Campaigning in North Russia