The Battle of the Dukla Pass, also known as the Dukla / Carpatho-Dukla / Rzeszów-Dukla / Dukla-Prešov Offensive was the scene of bitterly contested battle for the Dukla Pass (borderland between Poland and Slovakia) on the Eastern Front of World War II between Nazi Germany and the Soviet Union in September–October 1944. It was part of the Soviet East Carpathian Strategic Offensive that also included the Carpathian-Uzhgorod Offensive. The operation's primary goal to provide support for the Slovaks was not achieved, however it concluded the full liberation of the Ukraine in its modern borders by the occupation of the Subcarpathian region as a territory of the former Carpatho-Ukraine.