On 21 September, Marshal of the Soviet Union Voroshilov, German military attaché General Köstring, and other officers signed a formal agreement in Moscow co-ordinating military movements in Poland, including the "purging" of saboteurs and the Red Army assisting with destruction of the "enemy". Joint German–Soviet parades were held in Lviv and Brest-Litovsk, and the countries' military commanders met in the latter city. Stalin had decided in August that he was going to liquidate the Polish state, and a German–Soviet meeting in September addressed the future structure of the "Polish region". Soviet authorities immediately started a campaign of Sovietisation of the newly acquired areas. The Soviets organised staged elections, the result of which was to become a legitimisation of the Soviet annexation of eastern Poland..
on 21 september marshal of the soviet union voroshilov german military attaché general köstring and other officers signed a formal agreement in moscow co-ordinating military movements in poland including the "purging" of saboteurs and the red army assisting with destruction of the "enemy" joint german–soviet parades were held in lviv and brest-litovsk and the countries' military commanders met in the latter city stalin had decided in august that he was going to liquidate the polish state and a german–soviet meeting in september addressed the future structure of the "polish region" soviet authorities immediately started a campaign of sovietisation of the newly acquired areas the soviets organised staged elections the result of which was to become a legitimisation of the soviet annexation of eastern poland