The invasion was a ghastly failure for the Russians, a setback which was followed by considerable German advances in the following year, including the capture of the Polish city of Warsaw . However, the crisis caused in the German High Command by the unexpected Russian advance forced the sending of 2 corps and a cavalry division from the Western Front as part of the new 9th Army in order to support the attack on the Russians. These additional forces did not arrive in time for the twin battles, as Ludendorff predicted and, had they entered France as originally planned could have been tremendously helpful to the precarious situation in the West. In the head of French Intelligence Colonel Dupont's words, "their debacle was one of the elements of our victory."   
Soviet victory came at a high price, but a combination of total-war mobilisation, better fighting methods and high operational skills defeated a German army that in 1944 was a formidable, heavily armed and modern fighting force. Soviet resistance made possible a successful Allied invasion of France, and ensured the final Allied victory over Germany. The Soviet state was transformed in the process into a superpower, and Communism, close to extinction in the autumn of 1941, came to dominate the whole Eurasian area, from East Germany to North Korea.