In the wake of the end of World War I in November 1918 near Kraków, Poles captured an Austrian armoured train. It was renamed Śmiały and immediately entered service. Soon afterwards it was sent to Lwów to fight against the Ukrainians in the Polish-Ukrainian War. In the interwar period, the train was stationed in the 2. Dywizjon Pociągów Pancernych located in Niepołomice near Kraków. As with all other Polish armoured trains of the period it was modernised with updated wagons and a Ti3-type armoured locomotive. Before the outbreak of World War Two, the train's armament featured two 100mm howitzers, two 75mm cannons, and 19heavy machine guns. It also was provisioned with two Sokół motorcycles, a Renault FT-17 tank and equipment to repair tracks.
World War II
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. Śmiały was assigned to the Łódź Army, in support of the Volhynian Cavalry Brigade. On the night of Aug 31/Sep 1, the train left for Chorzew Siemkowice, where it arrived at 5 o’clock in the morning. During the Battle of Mokra, it supported the 21st Vistula Uhlan Regiment, which fought the advancing German 4th Panzer Division. After destroying a number of tanks, the train itself was hit, and forced to retreat to Działoszyn. 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. In the evening of September 5, Polish units began a general retreat, and Śmiały left towards Skierniewice, Łowicz, and Warsaw. On September 8, the train arrived at Siedlce, then via Łuków it came to Brześć nad Bugiem, arriving there on September 14. Near the station of Żabinka, Śmiały repulsed the attack of the 10th Panzer Division. In the afternoon of September 14, the Wehrmacht captured the main rail station at Brześć, and Śmiały withdrew to Kowel, then to Łuck, where it arrived on September 16. 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. Śmiały operated in the area of the Lwów-Łyczaków rail station, supporting Polish infantry in the Battle of Lwów. On September 19, it took part in a raid on Kamionka Strumiłowa, returning to the Lwów-Podzamcze station in the evening. 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.