1. Germany and Russia - Pariahs of Versailles -- 2. The Peculiar Basis of Relations between the RKKA and the Reichswehr -- 3. The Concept of Military Cooperation Seemed Simple and of Mutual Benefit -- 4. The Program of Cooperation Was Rather Wide -- 5. The Year 1933: Never Had Relations Been Maintained in a Tenser General Political Atmosphere -- Epilog: Dearly Bought Collaboration.