September 9, 1939
Battle of Bzura
The Battle of Bzura, lasting from September 9 to 22, 1939, was the largest armed clash of the September Campaign. In this battle, the Polish armies 'Poznań' and 'Pomorze' under the command of Gen. Tadeusz Kutrzeba and Gen. Władysław Bortnowski made a desperate attempt to stop the German advance on Warsaw.
