Before the outbreak of World War II, the train's armament featured two 100mm howitzers, two 75mm cannons, and 19 heavy machine guns.

[1] On August 27, 1939, the train, commanded by Captain Mieczysław Malinowski, was sent from Niepołomice towards the Polish-German border, where it patrolled the rail line Kłobuck-Działoszyn-Chorzew Siemkowice-Nowa Brzeźnica.

On September 2, after several skirmishes with German units, the train left for Łask, and on the next day it found itself in Łódź, from where it moved to Koluszki, awaiting orders.

The next day, after news of the Soviet invasion of Poland reached its crew, the train headed southwards, to Lwów, where it arrived on September 18.

After the capitulation of Polish forces in the city, the train was abandoned by its crew, and seized by the Red Army, possibly along with the Bartosz Głowacki (PP 55).