[7] In March 1944 the Home Army and Peasant Battalions led by Zenon Jachymek and Stanisław Basaj started the largest anti-Ukrainian action of the Polish Underground State named the Hrubieszów revolution,[8] the result of the event was the killing of 1,969 Ukrainians.

[13] On 1 June 1944, Polish units began preparing for an attack on the approximately fifty-kilometre-long Tyszowce - Łaszczów - Jarczów section.

On the morning of 2 June the grouping started to develop for the attack from Dabrowa forest in order to drive out the UPA soldiers.

The third company of the lieutenant, "Muryna" insuring the action of Korczak's troops, after a short battle, drove back the Ukrainian unit to Telatyn and moved to capture Posadów, Rzeplin and the surrounding forests.

The 2nd Group was quickly recognised by the enemy, which had a detrimental effect on the course and conduct of the entire action; moreover, "Korczak" halted the march of his units to the starting positions and moved to the Żulice forest.

At this time, the horse reconnaissance of the Korczyński cavalry group, in the strength of 96 Uhlans, attacked Rokitno, which, after some support from "Muryna"'s soldiers, was captured.

[16] A part of the "Korczak" detachment, stationed idly in the forest, moved at about 9.30 a.m. to support the remaining forces of the 2nd Platoon.

T. Niedziałkowski, "Tomasz", who, aware of the situation on the battlefield, left Bela's company and with part of his forces struck in the direction of "Ulhówka.

[2] The "Waręż" unit, under the command of Józef Kozak, captured the Dębina manor, but unsuccessfully tried to launch an attack from the direction of the meadows on Rzeczyca in order to help the "Reneta" grouping entangled in the battle.

Lieutenant "Czaplinski"'s 4th grouping, without encountering any resistance in the villages of Lubcze, Szlatyn and Hubinek, moved towards Rzeczyca to support the embattled units.

Also, Group VII, 2nd Lt. B. Wojciechowski, "Czarny" continued the attack on Dyniska, driving the UPA out of it, and then, in another offensive, captured Dębina.

[19] In 14 June, the UPA counterattacked at the town of Łaszczów and it was one of the final battles of the Polish–Ukrainian ethnic conflict in the region due to the Soviet intervention.