It was fought on 17 August 1920, near the railway station of Zadwórze, a small village located 33 kilometres from the city centre of Lwów (now Lviv).

The Polish headquarters prepared a plan to counter-attack the Red Army on its left flank from the Wieprz River area, in what became known as the Battle of Warsaw.

After several days of heavy fighting, the 1st Cavalry Army under Siemion Budionnyi broke through Polish lines of defense and started its march towards Lwów.

On the morning of 16 August the 1st battalion of the 54th Kresy Rifles Infantry Regiment [pl] was sent from Lwów towards the village of Nowosiółki (east of the town of Krasne) in order to help the endangered units formed by Roman Abraham.

At the same time, a battalion of approximately 500 volunteers organized by Roman Abraham under command of Captain Bolesław Zajączkowski was marching from Krasne along the Lwów-Tarnopol railroad.

By dusk, the Poles' ammunition was almost completely depleted, yet the Polish unit managed to repel six consecutive cavalry charges.

When the forces of Budionnyi finally regrouped and restarted their march northwards, it was already too late and the Battle of Warsaw ended with a complete defeat of the Red Army.

Among the Polish soldiers killed in the battle was 19-year-old Konstanty Zarugiewicz [pl], a student of the 7th course of primary school and a veteran of the 1918 defence of Lwów, for which he was awarded with Virtuti Militari and Krzyż Walecznych.