Several major cities were still in Polish hands, such as Warsaw, Lwów, Wilno, Grodno, Łuck, Tarnopol, and Lublin (captured by the Germans on 18 September).
As maiores cidades aínda estaban en mans polacas, como Varsovia, Lwów, Wilno, Grodno, Łuck, Tarnopol e Lublin (capturada polos alemáns o 18 de setembro).