It avoided destruction on the fronts of the Great War and was merged into the newly reborn Polish Army in 1918.

With that unit the regiment, headed by Col. Ludwik Czyżewski, formed the backbone of the Piotrków Operational Group at the start of the Invasion of Poland in 1939.

After heavy fights on 12 and 13 September, fought in the area of Błonie, Ołtarzew and Ożarów, the regiment crossed the Kampinos Forest and reached the Modlin Fortress.

In August 1944, during the Operation Tempest, the 2nd Regiment was recreated from smaller partisan units as part of the 2nd Division fighting in the area of Sandomierz and Opatów.

Most[1] of its soldiers, much like the rest of Armia Krajowa, were then rounded up by the NKVD, disarmed and either forcibly conscripted to the Communist-supported Polish People's Army or sent to the Gulags in USSR.