9th Infantry Division (Poland)

The 9th Infantry Division (Polish: 9 Dywizja Piechoty) was a unit of the Polish Army in the Second Polish Republic. The division was originally formed in 1919. Stationed in Siedlce, it took part in the Polish September Campaign under Colonel Józef Werobej. The history of the 9th Division dates back to early summer of 1919. It was formed on June 12 of that year, in the region of Polesie, out of units of Operational Group Polesie, commanded by General Antoni Listowski. At that time, it was divided into two Infantry Brigades and one Artillery Brigade:

As part of Pomorze Army the 9th I.D. defended the 70-kilometer line between the town of Pruszcz and the village of Gostycyn in Polish Pomerania. In the morning of September 1, 1939, it was attacked by three Wehrmacht divisions – 2nd Armored-Motorized, 3rd Armored and 32nd I.D. After heavy fighting, the Poles withdrew in the evening to the area of Cekcyn. Another defense line was established there, but the Germans broke it and the 9th I.D. retreated over the Brda and to the suburbs of Bydgoszcz.

There, General Władysław Bortnowski ordered three Polish units – 9th I.D., the 27th Infantry Division, and Operational Group "Czersk" – to counterattack on the morning of September. However, communication between 9th I.D. and 27th I.D. failed and the offensive was a failure, with the German 3rd Armored Division managing to halt it.

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