Russians helping the Germans break the Versaille treaty started in 1922 with the Rapallo treaty and it's secret provision where they created 4 military bases/factories inside Russia for Germans to use to design, test and build military hardware as well as train men.
"Representatives of Germany and the Soviet Union met during the Genoa Conference in Italy in 1922. On 16 Apr, the two nations came to an agreement in the Italian town of Rapallo which later formalized as the Treaty of Rapallo. The agreement noted that the two nations would renounce all territorial and monetary claims against each other as the result of the Treaty of Brest-Litovsk at the end of WW1, and the two nations were to engage in friendly relations. The agreement was viewed with alarm by the United Kingdom, France, Finland, Poland, and the Baltic states. On 29 Jul, a secret clause was added. Under this new clause, the Soviet Union was to provide heavy weapons and facilities for German military training, which was prohibited by the Treaty of Versailles; meanwhile, Germany was to conduct training for the Soviet military and to provide the Soviet Union with an annual payment. The Treaty of Rapallo was formally signed in Berlin, Germany on 5 Nov 1922."
https://ww2db.com/battle_spec.php?battle_id=237
The Russians have always been wanna' be Nazi's. Kinda like aggy Nazi's.