XIX Army Corps reached Brest-Litovsk on 14 September 1939 . The Battle of Brest-Litovsk between 14 September and 17 September 1939 saw the corps and 10th Panzer Division pitted against Konstanty Plisowski 's Brześć defense group , a small token force using outdated FT-17 tanks . This obstacle too the XIX Army Corps overcame after some three days of delay actions by the Polish defenders . Plisowski 's Polish soldiers , just like Raginis ' units at Wizna , slowed down XIX Army Corps in spite of the crushing numerical and technological advantages on the German side . Plisowski abandoned the city near the end of the battle and retreated to other Polish lines . He would end up a Soviet POW and was eventually murdered in the Katyn massacre
Katyn massacre
Katyn massacre
XIX Army Corps