The uniforms and weapons were German, seized from the barracks of the Ober Ost, but at the beginning, the regiment lacked horses.

By the summer of 1919, squadrons of the brigade were sent to the eastern front, to reinforce the Lithuanian–Belarusian Division in the ongoing Polish-Soviet War.

On August 6, 1920, the regiment reached Siedlce, and for the remaining part of the month was engaged in heavy fighting against the advancing enemy.

After the armistice of October 19, 1920, the regiment was located in the area of Dokszyce, where its flag, funded by Countess Julia Potocka, was handed to the officers in a parish church at the village of Parafianowo (November 4, 1920).

As part of Podlaska Cavalry Brigade (Independent Operational Group Narew), it defended hills around the village of Olszewo-Gora.

On September 2–4, the regiment took part in a cavalry raid on East Prussia, after which it retreated back to Poland.

In the night of September 24/25, the uhlans crossed the Bug river near Mielnik, and in early October, it fought near Serokomla.